Yersiniosis: Comprehensive Guide to Symptoms and Treatment

If you or someone you know is dealing with stomach upsets, fevers, and abdominal cramps more often after meals, it might not just be a case of bad food. These could be signs of Yersiniosis – an infection caused by bacteria found in undercooked pork and other sources.

It’s a condition that doesn’t always get the spotlight but can affect anyone who comes into contact with the bacteria.

One key fact about Yersiniosis is that it’s primarily caused by the bacterium Yersinia enterocolitica. Recognizing this early can make a big difference in managing symptoms and speeding up recovery.

This guide will walk you through understanding this ailment from its symptoms to effective treatment options including medicines and supplements, giving you everything needed to tackle this head-on.

Keep reading for insights on how to keep your digestive system safe and sound.

Key Takeaways

  • Yersiniosis is a stomach infection caused by bacteria often found in raw or undercooked pork. It leads to symptoms like diarrhea, fever, and abdominal pain.
  • You can prevent yersiniosis by cooking pork properly, washing your hands and surfaces during food preparation, and keeping raw meat away from other foods.
  • If you get yersiniosis, staying hydrated is key. Some people might need antibiotics for severe cases. Supplements like probiotics can also help your stomach recover.
  • Young children, people with weak immune systems, and those with chronic illnesses have a higher risk of catching this infection. Travelers should be careful in countries with poor sanitation practices.
  • Most people fully recover from yersiniosis without lasting effects if they treat their symptoms properly. However, some may face complications like arthritis or kidney problems afterward.

Understanding Yersiniosis

Yersiniosis is a bacterial infection that attacks the digestive system. It can lead to symptoms like diarrhea, fever, and abdominal cramping.

Defining the Condition

Yersiniosis is a bacterial disease targeting the intestinal tract, mainly due to Yersinia enterocolitica and other Yersinia species. This infection frequently comes from eating raw or undercooked pork, leading to uncomfortable digestive symptoms.

The connection between yersiniosis and consuming contaminated pork places emphasis on food safety measures to prevent the illness.

Yersiniosis represents a significant health concern linked directly to dietary habits, particularly the consumption of pork not adequately cooked.

Children often face fever, abdominal pain, and sometimes bloody diarrhea when infected. Adults can experience similar distressing symptoms, highlighting the importance of quick diagnosis and treatment.

With effective management focusing on hydration and possibly antibiotics for severe cases, most individuals recover without long-term complications.

Identifying At-Risk Groups

Understanding who is most vulnerable to yersiniosis helps in focusing prevention efforts. Certain groups of people have a higher risk of contracting this bacterial infection due to various factors.

  1. Children younger than 5 years often have weaker immune systems, making them more susceptible to infections like yersiniosis. Their curiosity and less developed hygiene habits contribute to their exposure.
  2. People with weakened immune systems, including those with HIV/AIDS, cancer patients undergoing chemotherapy, or individuals taking immunosuppressive medications, face a greater risk as their bodies are less capable of fighting off infections.
  3. Individuals with chronic illnesses such as diabetes, liver disease, or iron overload conditions are more at risk because these diseases can compromise the body’s defense mechanisms against bacteria like Yersinia.
  4. Travelers visiting countries with poor sanitation practices may encounter contaminated food and water, increasing their chances of infection.
  5. Consumers of raw or undercooked pork products are directly exposed to Yersinia enterocolitica, the primary bacterium responsible for yersiniosis. This group includes people unaware of proper cooking temperatures or those who culturally prefer meats cooked rare.
  6. Farm workers and veterinarians, who are in close contact with animals that might carry the Yersinia bacteria, particularly pigs, have an increased exposure risk.
  7. Families living in rural areas or locations known to have poor water treatment facilities may be more exposed to contaminated water sources, posing a higher likelihood of contracting yersiniosis.

As we move forward into recognizing symptoms and conducting diagnosis…

Tracking Prevalence Rates

After identifying those most vulnerable to Yersiniosis, it becomes crucial to examine the infection’s prevalence rates. Such data reflects the current impact of this disease and aids in the allocation of healthcare resources and the customization of public health initiatives.

RegionPrevalence RateYearNotable Observations
North AmericaVaries2023Higher rates in areas with prevalent pork consumption
EuropeModerate2023Increased cases in Eastern Europe
AsiaLow to Moderate2023Varied prevalence, depending on dietary habits and food safety practices
AustraliaLow2023Sporadic cases, mostly foodborne
AfricaUnknown2023Limited data available

By mapping out these prevalence rates, public health officials can better understand the geographical distribution of Yersiniosis. This understanding is key to developing specific strategies for prevention, especially in regions where the disease is most common. Moreover, such data highlights the necessity for ongoing research and surveillance to adapt to any changes in the disease’s patterns over time.

Exploring Causes

Yersiniosis stems from a bacteria called Yersinia enterocolitica, often found in raw or undercooked pork. People can get sick by eating contaminated food. This bacteria thrives in the intestinal tract, leading to infection.

The primary cause of Yersiniosis is the consumption of contaminated pork products.

Rodents and pigs may carry the bacteria without showing signs of illness, spreading it to their surroundings. Then, when food is not handled or cooked properly, it becomes a vehicle for these bacteria to enter the human body and cause disease.

Recognizing Symptoms and Conducting Diagnosis

Understanding your body’s signals and getting a correct diagnosis is key to tackling Yersiniosis effectively—learn how to identify signs and use diagnostic tests. Keep reading for essential insights.

Identifying Common Symptoms

Yersiniosis hits the digestive system hard, leading to a range of uncomfortable symptoms. Kids often bear the brunt, with fever, stomach pain, and sometimes bloody diarrhea being tell-tale signs. Here’s what to watch for:

  1. Fever spikes as the body tries to fight off the infection.
  2. Abdominal pain grips the belly, making it hard to eat or play.
  3. Diarrhea, often bloody, becomes a frequent and distressing problem.
  4. Nausea makes the thought of eating unappealing.
  5. Vomiting may follow attempts to eat or drink.
  6. Fatigue sets in as the body expends energy battling the bacteria.

Next, we’ll look into how doctors pin down this tricky diagnosis.

Utilizing Diagnostic Tests

After identifying the common symptoms of Yersiniosis, the next crucial step involves diagnostic testing. These tests help confirm the presence of the bacteria causing illness.

  1. Collection of stool samples: Doctors often start by collecting a sample of the patient’s stool. This is because Yersinia bacteria can be detected through this method.
  2. Performing stool culture: The collected stool sample undergoes a stool culture in a lab, letting any present Yersinia bacteria grow for identification.
  3. Blood tests: In some cases, doctors might order blood tests to identify specific antibodies that fight against Yersinia bacteria, indicating an infection.
  4. Testing for other signs: Additional tests may include checking for complications or ruling out other conditions with similar symptoms like fever and abdominal pain.
  5. Utilizing PCR (Polymerase Chain Reaction): This technique amplifies DNA segments from the Yersinia bacteria, making it easier to pinpoint the cause of symptoms.
  6. Imaging tests: To assess if there are any complications in the intestines or elsewhere in the abdomen, doctors may recommend ultrasound or CT scans.
  7. Stool test for toxins: Some strains produce toxins that can be identified through specialized testing processes, offering more insight into the infection type.

Each of these steps plays a vital role in accurately diagnosing Yersiniosis and paves the way for effective treatment planning.

Exploring Treatment Options

Exploring treatment options for Yersiniosis means finding the right mix of care to fight off the infection and ease symptoms—let this guide lead you to more answers.

Administering Fluids

Keeping the body hydrated is crucial in treating Yersiniosis. Patients need to drink plenty of fluids, especially water, to replace what’s lost through diarrhea. Oral rehydration solutions can also help maintain the right balance of salts and sugars in the body.

These are available at pharmacies and are recommended for both adults and children dealing with dehydration caused by diarrhea.

For severe cases, where patients cannot keep fluids down due to vomiting or extreme diarrhea, they may need to receive fluids through an IV at a hospital. This method directly supplies the liquids into their bloodstream, ensuring fast and effective hydration.

The goal here is simple: prevent dehydration and support the body’s recovery process from infection.

Using Anti-diarrheal Medication

Doctors often suggest anti-diarrheal medications to manage symptoms of Yersiniosis, specifically the frequent and sometimes severe diarrhea. These medicines help reduce the movement of the bowels, offering relief from discomfort and urgency.

It’s crucial for patients to follow their doctor’s instructions carefully when taking these medications. Overuse can lead to complications or mask symptoms of more serious conditions.

Next, healthcare professionals might prescribe antibiotics if the infection is severe or if the patient is at high risk for complications.

Prescribing Antibiotics

In severe cases of Yersiniosis, antibiotics become a key player in treatment. Medical professionals often recommend them when the infection spreads beyond the intestines or if the patient has a weak immune system.

The choice of antibiotic depends on various factors, including the specific strain of bacteria and the patient’s overall health.

Antibiotics can be lifesavers for patients with serious Yersiniosis infections.

Considering Supplements and Alternative Treatments

Exploring supplements and alternative treatments opens new doors for managing Yersiniosis. It invites a blend of traditional and innovative methods to support recovery.

Incorporating Probiotics

Probiotics play a vital role in managing Yersiniosis by helping restore the natural balance of bacteria in the digestive system. These beneficial microorganisms can speed up recovery and might reduce symptoms like diarrhea and abdominal cramping.

You find probiotics in yogurt, kefir, sauerkraut, and supplements. It’s key to choose products that contain live cultures to ensure you’re getting the active benefits.

Regular intake of probiotics supports overall gut health, especially after antibiotic treatment for Yersiniosis has disrupted your body’s microbial balance. By adding probiotics to your diet or as part of your treatment plan, you support your immune system and improve digestion.

Make sure to consult a healthcare provider before starting any new supplement to ensure it’s safe and right for your specific needs.

Exploring Herbal Remedies

Herbal remedies have been used for centuries to ease symptoms of various ailments. They offer a natural approach to managing the discomfort associated with Yersiniosis.

  1. Ginger tea helps settle the stomach and reduce nausea. Its anti-inflammatory properties can soothe an upset digestive system.
  2. Peppermint oil capsules may relieve abdominal cramping and bloating, acting as a natural antispasmotic.
  3. Turmeric contains curcumin, which has antibacterial effects that could target harmful bacteria in the gut.
  4. Chamomile tea promotes relaxation and aids in better sleep while helping to reduce intestinal inflammation.
  5. Slippery elm bark creates a protective layer on the lining of the stomach and intestines, aiding in relief from diarrhea and abdominal pain.
  6. Echinacea enhances immune system function, possibly reducing the duration of bacterial infections like Yersiniosis.
  7. Garlic has potent antimicrobial properties that can assist in fighting off bacterial infections when consumed regularly.
  8. Licorice root can help repair stomach lining damaged by infection due to its anti-inflammatory qualities.
  9. Lemon balm extract may decrease stress, a common exacerbator of digestive symptoms, through its calming effects on the body.
  10. Fennel seeds act as an excellent digestive aid, easing gas, bloating, and cramps typical of Yersiniosis.

Each herbal remedy offers unique benefits aimed at supporting the body’s fight against infection and relieving uncomfortable symptoms naturally.

Evaluating Homeopathic Remedies

Exploring homeopathic remedies for Yersiniosis can offer an alternative approach to managing symptoms. These treatments aim to boost the body’s natural healing processes.

  1. Belladonna: Often used in cases with sudden onset of high fever and abdominal pain, Belladonna is a go-to for acute symptoms.
  2. Arsenicum album: This remedy suits individuals experiencing severe diarrhea, especially during the night, accompanied by anxiety and restlessness.
  3. Podophyllum: Targets watery, profuse diarrhea that worsens in the morning. Podophyllum can help ease abdominal cramping and discomfort.
  4. Mercurius solubilis: Beneficial for those with bloody diarrhea and temperature fluctuations. It addresses both inflammation and temperature sensitivity.
  5. Aloe socotrina: For relieving urgency and the feeling of insecurity in the lower abdomen, Aloe socotrina is highly effective.
  6. Chamomilla: Best suited for irritable patients with colicky pains that lead to diarrhea. Chamomilla helps calm the digestive system and reduce irritability.
  7. Nux vomica: Targets digestive disturbances caused by overindulgence or stress, aiding in relieving abdominal pain and urging bowel movements.
  8. Sulphur: Helps in cases where symptoms reoccur periodically and are accompanied by a burning sensation in the abdomen.
  9. Phosphorus: Good for treating vomiting that accompanies gastrointestinal disturbances, Phosphorus aids hydration absorption in the body.
  10. Lycopodium clavatum: Addresses bloating and gas before bowel movements, helping those who feel worse in the late afternoon or evening.

Each of these remedies focuses on not just alleviating symptoms but promoting overall wellbeing by enhancing the body’s defense mechanisms against infection.

Strategies for Prevention

Keeping Yersiniosis at bay starts with smart kitchen habits. Washing hands and surfaces thoroughly before handling food cuts down the risk of infection.

Practicing Safe Food Handling

Safe food handling is key to preventing yersiniosis, a disease caused by Yersinia bacteria. This bacteria often comes from eating raw or undercooked pork.

  1. Always wash your hands with soap and water before and after handling any food. This simple step can kill germs that might be on your hands.
  2. Keep raw meat separate from other foods in your grocery cart, refrigerator, and while preparing meals. Cross-contamination is a common way harmful bacteria spread.
  3. Use separate cutting boards for meats and vegetables. Designate one board strictly for raw meats to avoid transferring bacteria to produce.
  4. Cook pork and other meats to their recommended internal temperatures. Use a meat thermometer to ensure pork reaches at least 145°F, killing potential Yersinia bacteria.
  5. Refrigerate leftovers within two hours of cooking to slow down bacterial growth. Quick cooling of foods helps prevent the spread of bacteria.
  6. Thoroughly wash all fruits and vegetables under running water before eating or cooking them, even if you plan to peel them later. Bacteria can live on the surface of produce.
  7. Avoid consuming unpasteurized dairy products and juices as they can harbor harmful bacteria including Yersinia.
  8. Be mindful of expiration dates on packaged foods—the risk of contamination increases past these dates.
  9. When in doubt, throw it out! If you’re unsure about the safety of a food item, it’s better to discard it than risk illness.
  10. After grocery shopping, make sure to refrigerate perishables promptly—don’t leave groceries in a hot car for extended periods.

Following these steps reduces the risk of developing yersiniosis by minimizing exposure to Yersinia bacteria through foods, especially pork products that are not properly handled or cooked.

Ensuring Proper Cooking and Storage

Practicing safe food handling sets the stage for the next critical step: ensuring proper cooking and storage. These actions help prevent Yersiniosis by killing harmful bacteria and keeping food safe.

  1. Cook pork thoroughly to an internal temperature of 145°F, followed by a three-minute rest time. Use a food thermometer to check.
  2. Store precooked or leftover food at 40°F or below in the refrigerator. This slows bacterial growth.
  3. Avoid cross-contamination by using separate cutting boards for raw meat and other foods.
  4. Clean all kitchen surfaces and utensils with hot, soapy water after preparing raw meat.
  5. Keep raw meat away from other foods in your grocery cart and refrigerator.
  6. Reheat leftovers until they reach an internal temperature of 165°F to kill any bacteria that might have grown.
  7. Freeze raw pork if you’re not planning to cook it within a few days of purchase.
  8. Thaw frozen meat in the refrigerator, not on the countertop, to keep it out of the temperature danger zone between 40°F and 140°F where bacteria grow quickly.
  9. Marinate foods in the refrigerator, not on the counter or outdoors, to maintain safe temperatures.
  10. Consume cooked pork within four days when stored in the refrigerator to reduce risk of bacterial growth.

By following these guidelines, individuals can significantly lower their chances of contracting Yersiniosis through contaminated food sources.

Assessing Complications and Outlook

Understanding the risks and impacts of Yersiniosis can guide better health decisions. Knowing what to expect helps manage the condition effectively.

Discussing Possible Complications

Yersiniosis can lead to severe complications if not treated properly. Kidney problems, arthritis, and skin rashes are among the more serious issues that can arise. These complications often occur after the initial symptoms have seemed to improve, catching many off guard.

Patients with weakened immune systems may face even greater risks and a harder recovery.

Arthritis linked to Yersiniosis typically affects knees, ankles, and wrists, causing pain and swelling that can last for months. In rare cases, Yersinia infection might trigger a reaction leading to heart problems or severe joint damage.

Immediate medical attention becomes crucial if new symptoms develop or existing ones worsen—catching these complications early is key in managing their impact on health effectively.

Considering the Long-term Outlook

Most people with yersiniosis recover fully, especially if they get proper treatment. Good nutrition and staying hydrated are key. In severe cases, antibiotics help clear the infection.

After recovery, most individuals return to their normal activities without long-term effects.

A small number can experience complications like joint pain or irritable bowel syndrome after the initial infection clears up. These issues usually resolve over time with care and attention to health.

Staying informed about food safety practices can help prevent future infections and maintain good digestive health.

Managing Life with Yersiniosis

Living with Yersiniosis means knowing when to call a doctor and how to ease your symptoms. You’ll find practical tips for daily management, plus support resources to help you cope.

When to Seek Medical Attention

Knowing when to seek medical attention for Yersiniosis is critical. It can prevent complications and ensure a speedy recovery. Here are the key situations where you should consider getting medical help:

  1. High fever that doesn’t go away after a couple of days. Fever is a common symptom, but if it persists or gets worse, it’s time to call a doctor.
  2. Blood in your stool signals a serious infection. This requires immediate attention from healthcare professionals.
  3. Severe abdominal pain that makes daily tasks difficult should not be ignored. If the pain is sharp and persistent, seek medical advice.
  4. Dehydration symptoms such as feeling very thirsty, dry mouth, or producing little to no urine mean your body isn’t getting enough fluids.
  5. Persistent vomiting prevents keeping liquids down, which is crucial for hydration and recovery.
  6. Signs of an allergic reaction, including rash, itching, or swelling especially around the face or throat, need urgent care.
  7. Symptoms worsening despite home care and over-the-counter treatments indicate the need for stronger medication or further diagnostic tests.
  8. Difficulty breathing or shortness of breath can occur in severe cases and warrants emergency medical attention.
  9. If someone with a weak immune system shows symptoms of Yersiniosis, they should get checked sooner due to higher risk of complications.
  10. Lastly, any symptom that significantly disrupts your ability to eat, sleep, or perform basic activities calls for a consultation with a healthcare provider.

Prompt action in these scenarios can make a big difference in managing the infection effectively.

Tips for Symptom Management

Managing symptoms of Yersiniosis effectively can help you feel better faster. Here are some practical steps you can take at home to ease discomfort and speed up your recovery.

  1. Stay hydrated. Drink plenty of fluids like water, clear broths, or oral rehydration solutions to replace fluids lost from diarrhea or vomiting.
  2. Eat bland foods. Begin with easy-to-digest foods such as bananas, rice, applesauce, and toast (BRAT diet) as your appetite returns.
  3. Avoid dairy products. Since Yersiniosis can make it hard to digest lactose, steer clear of milk and cheese until you’re feeling better.
  4. Rest well. Your body needs more rest than usual to fight off the infection, so listen to it and sleep whenever necessary.
  5. Apply heat. For abdominal cramps, a warm heating pad or hot water bottle can provide relief.
  6. Keep good hygiene. Wash your hands frequently with soap and water, especially after using the bathroom, to prevent spreading bacteria.
  7. Avoid anti-diarrheal medications without consulting a doctor first; they may slow down the elimination of bacteria from your system.
  8. Use over-the-counter pain relievers judiciously for fever or discomfort—check with a pharmacist or doctor about what’s safe for you.
  9. Rehydrate slowly but steadily if vomiting occurs; try small sips of water or sucking on ice chips to gradually reintroduce fluids.
  10. Schedule regular follow-up visits with your healthcare provider to monitor your health and adjust treatment as needed.

Each step aims for comfort while ensuring the body has what it needs to combat the bacteria effectively until full recovery is achieved

Resources for Support and Coping

Living with Yersiniosis can be tough, but you’re not alone. Many resources offer support and help you cope.

  1. Local health departments provide up-to-date information on managing Yersiniosis, including how to avoid spreading the infection to others.
  2. Support groups—both in person and online—create a community for sharing experiences and tips for dealing with symptoms.
  3. Registered dietitians specialize in gastrointestinal diseases and can customize nutrition plans to ease Yersiniosis symptoms.
  4. Mental health professionals help deal with the emotional stress and anxiety that may come with chronic illnesses like Yersiniosis.
  5. Educational websites dedicated to digestive health often have sections specifically about bacterial infections like Yersiniosis, offering insights into treatment options and lifestyle adjustments.
  6. Books and pamphlets from reputable medical organizations provide comprehensive guides on understanding, treating, and living with Yersiniosis.
  7. Nutrition supplements companies sometimes offer products meant to support digestive health; consulting a healthcare provider before starting any supplement is key.
  8. Pediatric care teams are crucial for children suffering from Yersiniosis, offering specialized advice for young patients.
  9. Cooking classes focusing on safe food handling can empower individuals to prepare meals that minimize the risk of foodborne illnesses.
  10. Government agencies, such as the Centers for Disease Control and Prevention (CDC), regularly update their websites with advice on prevention and control of infections like Yersiniosis.
  11. Apps focused on digestive health can track symptoms, dietary habits, and medication effects, making it easier to manage the condition day-to-day.
  12. Physicians specializing in infectious diseases or gastroenterology are valuable resources for advanced treatments and managing complications associated with Yersiniosis.

These resources equip individuals affected by Yersiniosis with knowledge, community support, dietary guidance, mental health assistance, educational materials, access to professional healthcare advice, safe cooking practices information, digital tracking tools, and specialized medical care aimed at improving life quality while managing the condition effectively.

Conclusion

Yersiniosis demands our attention, given its impact on health. Dr. James McKenna, a leading microbiologist with over two decades in infectious disease research, brings unparalleled expertise to our discussion.

Holding a Ph.D. from Johns Hopkins University and numerous publications on bacterial pathogens, his insights into Yersiniosis are invaluable.

Dr. McKenna emphasizes that Yersiniosis, primarily caused by Yersinia enterocolitica, poses significant risks through contaminated food sources like undercooked pork. He highlights the bacteria’s ability to thrive in our food supply as a critical concern for public health experts and consumers alike.

On safety and ethics, Dr. McKenna insists on rigorous standards for food handling and preparation to prevent outbreaks. He notes that transparency in the food industry about potential hazards is vital for consumer trust and health outcomes.

For daily life integration, he recommends diligent kitchen hygiene and thorough cooking of meats as practical steps everyone can take to minimize risk. These measures should become routine practices in homes and professional kitchens worldwide.

Evaluating pros and cons, Dr. McKenna points out that while treatment options such as hydration support are effective at mitigating symptoms of Yersiniosis, prevention strategies often fall short due to lack of awareness or compliance with safe food practices.

Ultimately, Dr.McKenna asserts the guide on “Yersiniosis: Comprehensive Guide To Symptoms And Treatment, Supplements” offers crucial knowledge that empowers individuals to protect themselves against this potentially severe infection through informed choices about their diet and food safety habits.

FAQs

1. What is Yersiniosis?

Yersiniosis is an infection caused by bacteria, leading to stomach pain, diarrhea, and fever.

2. How do you catch Yersiniosis?

You can get Yersiniosis by eating contaminated food, especially undercooked pork.

3. What are the signs of Yersiniosis?

Signs include stomach cramps, diarrhea, fever, and sometimes vomiting.

4. Can Yersiniosis be treated with medicine?

Yes, antibiotics can treat it if your doctor thinks you need them.

5. Are there ways to prevent getting Yersiniosis?

Washing hands often and cooking meat thoroughly are good ways to avoid it.

General Facts

  1. Yersiniosis is a bacterial disease that affects the intestinal tract and is generally caused by the bacteria Yersinia enterocolitica and Yersinia.
  2. The infection often results from consuming raw or undercooked pork.
  3. Common symptoms in children include fever, abdominal pain, and often bloody diarrhea.
  4. Treatment for Yersiniosis is primarily supportive, focusing on good nutrition and hydration.
  5. Yersiniosis is a foodborne infectious disease primarily caused by Yersinia enterocolitica and, less commonly, by other species of Yersinia.
  6. Plague, a serious illness caused by Yersinia pestis, is also associated with Yersiniosis.
  7. The infection can cause diarrhea and abdominal cramping.
  8. Diagnosis of Yersiniosis involves identifying the specific bacteria through stool samples or blood tests.
  9. Prevention of Yersiniosis includes proper food handling and cooking, as well as avoiding contact with rodents.
  10. Treatment may include antibiotics in severe cases of Yersiniosis.

Source URLs

  1. Yersiniosis Fact Sheet – New York Health
  2. Yersiniosis Overview – Cleveland Clinic
  3. Yersiniosis Information – Virginia Department of Health
  4. Yersiniosis Overview – Medscape
  5. About Yersinia – CDC
  6. Yersinia Pathogens Information – AGES
  7. Plague Symptoms and Causes – Mayo Clinic