immunity

How do you find your old vaccine records? Is a child protected if they haven't had all their shots? Who's at risk, and does polio spread in pools? Here’s a guide to facing a polio outbreak in 2022.

Nurse Sophia Labarbera-Limone has caught the coronavirus multiple times and has had one dose of mRNA vaccine. But she refused to take a full course of shots due to a documented allergy and was fired by NYC Health + Hospitals.

Similar bills have passed in Oregon, California, New Hampshire and Vermont. Colorado passed an immunity bill last week.

Researchers walk through the step-by-step process and explain how much wiggle room is available with vaccine protection against infection.

New York and New Jersey have adopted the new recommendation from federal health officials.

To gauge what might happen going forward, let’s break down how the delta variant could affect New Yorkers based on their vaccine status.

Frequently asked questions are emerging among those hesitant to get COVID vaccines. Here are ways to address their concerns.

Viral panic over so-called breakthrough infections offers a great lesson in number literacy.

Some experts are concerned about intensifying disparities between those vaccinated and those who haven’t gotten the shots, as well as creating a new threat to health privacy.

“People who have tested positive for Covid-19 do not need to quarantine or get tested again for up to three months as long as they do not develop symptoms again."