
Covid-19 vaccine booster effectiveness wanes after four months but still offers protection, study finds
CNN
Booster doses of the Pfizer/BioNTech and Moderna coronavirus vaccines are safe, and they offer high levels of protection against severe Covid-19 even though that protection can wane over time, according to two studies published by the US Centers for Disease Control and Prevention on Friday.
Evidence of waning protection "reinforces the importance of further consideration of additional doses to sustain or improve protection" against Covid-19-linked hospitalizations and emergency department visits, one of the studies says.

The Providence mayor wants the Reddit tipster to get a $50,000 FBI reward. It might not be so simple
His detailed tip helped lead investigators to the gunman behind the deadly Brown University shooting – but whether the tipster known only as “John” will ever receive the $50,000 reward offered by the FBI is still an open question.












