Infectious Diseases

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Bird flu, also called avian influenza, is one of those diseases people hear about during outbreaks but rarely fully understand. It is not the same as seasonal flu. It behaves differently, affects people differently, and carries risks that make public health experts pay close attention. … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Understanding how long H3N2 flu lasts helps people plan care, reduce spread, and know when something is not normal. H3N2 is a strain of Influenza A that often causes more intense symptoms, especially in older adults and young children. The illness usually follows a predictable … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Influenza C is the quiet cousin of flu viruses. Most people have never heard of it, yet many have likely had it. It causes mild respiratory illness, often mistaken for a common cold. Still, understanding influenza C symptoms matters, especially for parents, clinicians, and people … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Influenza in 2025 still looks familiar, but doctors are noticing shifts. Symptoms are starting faster, lasting longer in some people, and showing up outside the lungs more often. Digestive issues, neurologic symptoms, and extreme fatigue are being reported more than in past seasons. This guide … Read more

Let’s dive in. I’m going to walk through what we really know about influenza (sometimes just called the flu) in 2025—how it shows up, why it happens, and what you can do about it. I’ll aim to bring you expert-level clarity without jargon, so you can use this information in real life. This is for … Read more

In this article I’ll walk you through how the flu virus works, why you catch it, which “latent” fears people often have, and exactly what you can do to reduce your risk. We’ll cover causes, transmission, high-risk groups, and prevention—from daily habits to vaccine strategy. I’ll also highlight where you should dig deeper (for example, … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Influenza B is often brushed off as “just the flu,” but that mindset causes people to miss early warning signs, delay care, and spread the virus without realizing it. Influenza B symptoms can look mild at first, then hit hard within hours. For children, older … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Influenza A is not just a bad cold. It hits fast, feels intense, and can disrupt your life for days or even weeks. One of the most common questions patients ask is simple but important: how long does influenza A last? Here’s the clear answer … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Influenza A is not just a bad cold. It is a fast-moving viral illness that can hit hard, spread quickly, and lead to serious complications in the wrong setting. Knowing influenza A symptoms early can make a real difference in recovery time, complication risk, and … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Common Cold Symptoms Guide for Fast, Clear Relief When you start feeling that scratchy throat or a sudden heavy head, you want answers fast. A common cold is a viral infection of your nose and throat. While it usually isn’t serious, the discomfort can slow … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. How Long Does the Common Cold Last? The average common cold lasts between 7 to 10 days. While most people begin to feel better within a week, some symptoms—especially a lingering cough—can stick around for up to three weeks. If you are generally healthy, your … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Flu Symptoms and Treatments 2026 If you are looking for Flu Symptoms and Treatments 2026, the most important thing to know is that this year’s flu season is moving fast, driven largely by a mutated H3N2 strain often called “Subclade K.” Common symptoms include a … Read more