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. 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
Quick Answer: The “Nimbus” COVID variant (NB.1.8.1) is a 2026 sub-lineage of Omicron known for its high transmissibility. Its most defining symptom is a severe, “stabbing” sore throat, often compared to “swallowing glass.” Other common signs include persistent fatigue, heavy nasal congestion, and muscle aches in unusual areas like the jaw or upper back. While … Read more
COVID comes from the SARS-CoV-2 virus. It spreads through tiny particles in the air that an infected person breathes out. These particles can stay in the air for hours, even after the person has left the room. You can catch the virus from someone who looks completely healthy, because many people spread it before they … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary for Readers The “Stratus” variant, scientifically known as XFG, is a newer version of COVID-19 that has become common in early 2026. While it spreads more easily than older versions, it usually causes a mild to moderate illness for most people. The most … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary for 2026 As we move through 2026, Paxlovid remains the primary oral treatment for people at high risk of severe COVID-19. It is a 5-day pill course that helps stop the virus from spreading in your body. To work best, you must start … Read more
As we navigate the evolving landscape of respiratory illnesses in 2025, staying informed about the latest symptom profiles is crucial for personal health and public safety. The virus responsible for the global pandemic has undergone numerous changes, influencing how symptoms present and how individuals experience the illness. This article offers a deeply researched, nuanced exploration … 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
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: KF94 vs. KN95 If you are looking for a fast answer: KF94 and KN95 masks are nearly identical in protection. Both are high-quality respirators that filter out about 95% of tiny particles, including viruses and wildfire smoke. The main difference is the fit … 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
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. All 13 Bay Area health directors recommend flu and COVID-19 shots for everyone 6 months and older, even though the CDC narrowed its guidance to high-risk groups. Why? Local data shows overlapping waves of flu, COVID, and RSV are still straining hospitals. Vaccines cut the risk of severe illness, hospitalization, and missed work or … Read more
In the evolving landscape of global health, understanding the role of COVID vaccinations remains paramount. As we navigate 2025, the conversation around immunization has matured beyond initial urgency into a nuanced dialogue that balances scientific innovation, public health strategy, and individual well-being. This article offers a deeply researched, expert-driven exploration of COVID vaccinations, tailored to … 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
Even as we’ve adapted to life with COVID-19, questions about how long the virus can hang around on surfaces persist. In 2025, with vaccines widely available and new variants under constant scrutiny, fomite transmission—the spread through touched objects—remains a low but real risk. If you’ve ever wondered, “How long does COVID live on surfaces?” you’re … Read more