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. Key Takeways EMERGENCY WARNING: If you or someone in your care experiences severe trouble breathing, persistent chest pain or pressure, new confusion, inability to wake or stay awake, or a pale, gray, or blue discoloration on the lips, skin, or nail beds, seek immediate emergency … Read more
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
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
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary The Spring 2026 COVID booster program is designed to protect those at the highest risk of getting very sick. Health authorities, including the CDC and NHS, recommend this dose for adults aged 75 and older, residents of care homes, and anyone aged 6 … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: EMERGENCY WARNING: If you or someone in your care experiences severe difficulty breathing or shortness of breath at rest, persistent pain or pressure in the chest, new-onset confusion, inability to wake or stay awake, or a pale, gray, or blue discoloration on the … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Answer: Yes, KN95 masks are highly effective at protecting you from COVID-19. They are designed to filter out at least 95% of tiny airborne particles, including the virus that causes COVID-19. Because they fit tighter than standard surgical or cloth masks, they offer a … Read more
COVID-19 is generally more contagious than influenza A, especially with recent variants. However, real-world spread depends on immunity levels, vaccination status, and exposure settings. Introduction Respiratory viruses spread every year, but two infections cause the most concern: influenza A and COVID-19. Both can cause outbreaks, hospitalizations, and deaths. Patients often ask the same question: what … Read more
Yes, COVID-19 boosters are still recommended in 2025. Also Read About: Bay Area Health Officials Recommend Flu Covid Shots Despite CDC Dropping Universal Recommendations in 2025 Imagine this: It’s mid-winter 2025, and you’re scrolling through your feed when a friend shares a heartbreaking story—a vibrant 68-year-old grandmother, otherwise healthy, sidelined for weeks by a breakthrough … Read more
As we move deeper into 2025 and 2026, the landscape of immunization against COVID-19 continues to evolve. Vaccination remains a cornerstone of public health strategy worldwide, but with ongoing updates to vaccine formulations and booster recommendations, understanding the nuances of side effects is more important than ever. This article offers a comprehensive, expert-driven exploration of … Read more
As we navigate the evolving landscape of the COVID-19 pandemic in 2025–2026, understanding the current COVID symptoms remains crucial for personal health and public safety. While much has been learned since the virus first emerged, the virus’s mutations, vaccination impacts, and changing population immunity have shifted the symptom profile in subtle yet significant ways. This … Read more
Medically Reviewed and Compiled by: Dr. Adam N. Khan, MD. Quick Summary: EMERGENCY WARNING If you or a loved one experiences severe trouble breathing, persistent pain or pressure in the chest, new confusion, inability to wake or stay awake, or pale, gray, or blue-colored skin, lips, or nail beds, call 911 or go to the … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary EMERGENCY WARNING If you or someone in your care experiences severe trouble breathing, persistent pain or pressure in the chest, new confusion, inability to wake or stay awake, or pale, gray, or blue skin, lips, or nail beds, seek immediate emergency medical care … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Takeways EMERGENCY WARNING: If you or someone in your care experiences severe trouble breathing, persistent chest pain or pressure, new-onset confusion, inability to wake or stay awake, or a pale, gray, or blue discoloration on the lips, skin, or nail beds, seek immediate emergency … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary EMERGENCY WARNING: If you or someone you are caring for experiences severe shortness of breath, persistent pain or pressure in the chest, new confusion, trouble waking up or staying awake, or pale, gray, or blue-colored skin, lips, or nail beds, call 911 or … Read more