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.
For some patients, it starts like a bad flu. For others, it jumps straight to confusion, seizures, or coma—sometimes within days. That unpredictability is what makes Nipah virus infections so dangerous… and why recognizing symptoms early matters more than almost anything else. This guide focuses squarely on nipah virus symptoms—how they show up, how they … Read more
Influenza remains a significant health threat, especially for older adults. While the standard flu vaccine offers crucial protection, a new generation of vaccines—often referred to as “super flu” vaccines—provides an even stronger shield for the most vulnerable populations. This guide will explore what makes these vaccines different, why they are particularly important for seniors, and … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Flu Symptoms 2026: What Patients Must Know The 2026 flu season has arrived with a sudden and intense surge. While many call it the “super flu,” doctors know it as a specific version of Influenza A (H3N2) called Subclade K. This year, the virus is … Read more
Measles is often considered a childhood illness, yet adults remain vulnerable—particularly those who are unvaccinated, under-vaccinated, or exposed during outbreaks. Adult measles can present with more severe symptoms and a higher risk of complications compared to childhood cases. Understanding measles symptoms in adults is critical for early detection, prompt isolation, and timely medical care. This … Read more
Understanding how long the flu is contagious is critical for preventing household spread, protecting vulnerable populations, and making informed decisions about returning to work or school. Influenza—particularly Flu A—spreads rapidly through respiratory droplets and contaminated surfaces. Many people underestimate the contagious period because viral shedding often continues even after fever subsides or symptoms begin to … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Adenovirus symptoms vary widely, ranging from mild cold-like illness to severe, life-threatening infections. Adenoviruses are a group of common viruses that infect the respiratory tract, eyes, gastrointestinal system, and urinary tract. They affect people of all ages but are especially common in children, military recruits, … 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
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. Quick Summary EMERGENCY WARNING Seek immediate emergency medical care (call 911 or go to the nearest emergency room) if you or someone in your care experiences severe difficulty breathing, shortness of breath, persistent chest pain or pressure, sudden confusion, difficulty waking up, seizures, a high … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Swollen throat glands can feel scary when they show up out of nowhere. Your neck feels tight, swallowing hurts, and you may worry something serious is going on. The good news is that most cases have clear causes and respond well to simple care. Still, … 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