The surge caused by the delta variant wasn’t only due to unvaccinated younger adults, but they played a substantial role

When the delta variant reached the U.S. and caused another huge surge of infections, a key question arose: Is delta more virulent — does it cause more severe disease — than previous variants? Today, about six months after delta infections first appeared in the U.S., the evidence still doesn’t point…

Outdoor trick-or-treating is very low-risk, though it doesn’t hurt to wear a mask for an extra layer of protection.

A year ago, we were still gathering data on the various ways SARS-CoV-2 was transmitted among humans, and we didn’t yet have an authorized vaccine, so Halloween activities were trickier to navigate. It was a safe bet that Halloween parties weren’t safe, but was trick-or-treating? Was it necessary to build…

If school is a potential source of Covid transmission, vaccinating young children is even more important to protect the adults they love.

With children’s Covid-19 vaccines on the verge of being available, the question now is how many parents will choose to vaccinate those aged 5–11 years old. While more than one in four parents (27%) are anxious to vaccinate their younger kids, the most recent numbers from the Kaiser Family Foundation…

The case highlights the best way to prevent transmission in schools: vaccination, masking, testing, and ventilation

On May 19, an unvaccinated elementary school teacher in Marin County, California, woke up with nasal congestion and fatigue. But figuring the symptoms were just allergies, the teacher went to school anyway. Over the next few days, more symptoms developed: cough, fever, and headache. Still, the teacher kept going to…

Findings from a new study don’t bode well for the coming school year, and this research predates the worrisome Delta variant

With the school year starting soon, debates are raging across the country about whether students should wear masks or not. Both the CDC and the American Academy of Pediatrics recommend that all staff and students wear masks, regardless of whether they’re vaccinated or not.

Yet only eight U.S. states are…

Tara Haelle

Tara Haelle is a science journalist, public speaker, and author of Vaccination Investigation and The Informed Parent. Follow her at @tarahaelle.

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