It’s been an unusually tough winter virus season. Rates of flu-like infections are higher than they’ve been in nearly 30 years. And for the first winter since the start of the COVID-19 pandemic, flu deaths have surpassed COVID deaths. Add to that a higher-than-average year for norovirus, a nasty type of stomach bug.

Then there’s the emerging threat of avian flu. While there is no evidence of human-to-human transmission of the virus, about 70 people in the US have contracted the virus from livestock since April 2024.

To make sense of the latest viral trends, Host Flora Lichtman talks with Dr. Katelyn Jetelina, epidemiologist and author of the newsletter “Your Local Epidemiologist”; and Dr. Erica Shenoy, chief of infection control at Mass General Brigham hospital.

Transcripts for each segment will be available after the show airs on sciencefriday.com.

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