The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez says. Their level of pre-existing immunity may also affect the likelihood or ...

A causal link is plausible, researchers say ...

Add Yahoo as a preferred source to see more of our stories on Google. Some people in China are reporting severe sore throat with COVID infections right now. apomares via Getty Images A positive ...

Ohio is a hotspot for respiratory illnesses, including COVID-19 and a new flu strain. Health officials advise staying home until you are fever-free for 24 hours and symptoms improve. COVID-19 ...

Stay on top of what’s happening in the Bay Area with essential Bay Area news stories, sent to your inbox every weekday. Bay Area-raised host Ericka Cruz Guevarra brings you context and analysis to ...

So she went to the emergency room — twice. Both times, the doctors performed a battery of tests: a chest CT scan, an echocardiogram, blood work. Nothing appeared. “Why do I feel this horrible all the ...

Several other people in the jail exhibited symptoms.

Looking for information about the FDA’s limited approval of 2025-26 COVID vaccines? Read what we know about who can get an updated COVID shot this year. Updated Aug. 27 If it feels like several people ...