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Infectious Diseases

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What is COVID rebound?

Infectious Diseases

COVID rebound is like watching an encore to a show you disliked the first time. Just when you’re feeling better, COVID comes back, and you’re feeling crummy again. ➡️ The good news is that rebound cases are usually mild. ➡️ The bad news is that they can be contagious. So, if you notice new COVID Read more…

Is COVID-19 surging?

Infectious Diseases

Yes. If it seems like everyone you know has gotten COVID-19 in the past 3 weeks, you aren’t wrong-cases, hospitalizations, and deaths are all on the rise in the U.S. Over the past 3-4 weeks, at least 4 Nerdy Girl families were hit with COVID-19, so if you feel like COVID-19 is everywhere, you are Read more…

Is ‘Immunity Debt’ Behind China’s Rising Childhood Pneumonia Cases?

Data and Metrics Infectious Diseases

TL;DR: There is no “immunity debt” for individuals. But *populations* can experience a “catch-up” period after a period of low virus transmission, which is what seems to be happening in China right now. Recent reports of a high number of cases of childhood pneumonia in China definitely made epidemiologists a tad nervous. But so far, Read more…

Why does the flu vaccine have to be updated every year?

Infectious Diseases Vaccines

Three reasons: 1. Influenza viruses mutate over time, 2. the virus strains circulating can vary year to year, and 3. our immunity wanes over time. That’s why the flu vaccine formula needs to be updated yearly, and we need to get a flu shot each season to be well-protected. Influenza viruses have proteins on their surface: hemagglutinin (HA) and neuraminidase (NA). Read more…

Q: Why can’t I get antibiotics for a cough?

Infectious Diseases

A: Taking an antibiotic when it’s not needed contributes to antimicrobial resistance and can put you and others at risk of more severe infections. TLDR: Antimicrobial resistance occurs when bacteria, fungi, parasites or viruses mutate in ways that make common treatments ineffective. More and more antibiotics are losing their effectiveness due to antimicrobial resistance, so Read more…