Evidence-Based Medical Knowledge You Can Trust
Infectious diseases are illnesses caused by bacteria, viruses, fungi, or parasites, spreading through contact, food, water, or vectors.
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Overview of COVID‑19 Duration Acute Phase Most people infected with SARS‑CoV‑2 recover from the acute COVID‑19 illness within 4 weeks of symptom onset. Recovery timelines vary with symptom severity: Typical Timeline Breakpoints The clinical literature commonly divides the course of COVID‑19 into phases: Long COVID … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD Introduction: What This Chart Reflects This article summarizes symptoms currently associated with acute COVID‑19 infection as recognized by major public health authorities in late 2025/early 2026. Symptoms of COVID‑19 hold continuity with prior years but may shift in prevalence due to viral evolution, immunity from … Read more
Respiratory Viruses in January 2026 Flu Still High, RSV and COVID Lower — Layered Protection Tips
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Understanding the difference between COVID-19 and seasonal influenza is essential for timely diagnosis, isolation decisions, and appropriate treatment. Both are respiratory viral infections. Both can cause fever, cough, fatigue, and body aches. Yet they differ in transmission patterns, complications, testing protocols, and high-risk populations. This … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Answer: The Best Foods to Eat If you are looking for immediate relief, stick to the BRAT diet: Bananas, Rice (white), Applesauce, and Toast (white). Focus on low-fiber, bland foods that are easy on your digestive system. Drink plenty of fluids like broth or … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Answer: Why Does Diarrhea Happen? Diarrhea is your body’s way of quickly getting rid of unwanted “guests.” It usually happens when your intestines can’t absorb enough fluid or when they secrete too much fluid, leading to loose, watery stools. The most common causes are … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Answer: What are the main symptoms of liver inflammation? Liver inflammation, often called hepatitis, usually shows up as extreme tiredness (fatigue), yellowing of the skin or eyes (jaundice), and pain in the upper right side of your belly. Other common signs include dark-colored urine, … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. If you are looking for a quick answer: the Hepatitis A vaccine is incredibly durable. For most people who complete the full two-dose series, protection lasts for at least 20 to 25 years. Many medical experts and mathematical models suggest that the immunity may actually … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Answer: Is Hepatitis Contagious? Yes, viral hepatitis is contagious, but how it spreads depends entirely on the type. Hepatitis A and E are usually spread through contaminated food or water. Hepatitis B, C, and D are spread through contact with infected blood or bodily … Read more
Quick Answer: A significant measles outbreak is currently spreading through North London, primarily affecting schools in Enfield and Haringey. As of February 2026, over 60 cases have been reported, with health officials warning of “fast-spreading” transmission among unvaccinated children. One in five infected children has required hospital treatment. The Situation in North London Health experts … Read more
Quick Answer: As of February 2026, the Seychelles is experiencing a significant outbreak of the Chikungunya virus, prompting the U.S. CDC to issue a Level 2 Travel Health Notice. The outbreak, which began in late 2025, is driven by the rainy season and active local transmission by Aedes mosquitoes. Travelers are urged to use EPA-approved … Read more
Chikungunya is a virus spread by mosquitoes that causes high fever and severe joint pain. In early 2026, health experts noticed a rise in cases across the Americas and parts of Asia. While a vaccine called IXCHIQ is available, new safety rules in 2026 limit its use to adults aged 18 to 59 who do … Read more
Have you ever wondered why, even as the world moves past the height of the pandemic, health experts keep urging us to get those updated shots? It’s not just routine advice—it’s rooted in evolving science that’s making a real difference in how we handle this virus. As someone who’s followed the twists and turns of … Read more
Have you ever paused amid the chaos of a global event and wondered, “How did this all really begin?” That’s the question at the heart of the COVID-19 story—a pandemic that reshaped our world in ways we’re still unpacking. As someone who’s spent years tracking infectious diseases and their impact on everyday health, I’ve seen … Read more
The AstraZeneca COVID-19 vaccine was a major tool in the fight against the global pandemic. Developed by Oxford University and the company AstraZeneca, it reached billions of people. While it saved millions of lives, its journey was filled with both success and difficult questions. Today, in 2026, we can look back at the full history, … Read more