People who had 2 COVID infections were more than twice as likely to report long COVID as those with 1 infection, and the risk rose with more reinfections.

The main clinical characteristics of COVID‐19 are respiratory symptoms that can lead to serious cardiovascular damages and severe worsening of other medical conditions. One of the major strategies in ...

Vaccine effectiveness studies have conclusively demonstrated the benefit of COVID-19 vaccines in reducing individual symptomatic and severe disease, resulting in reduced hospitalisations and intensive...

This systematic review and meta-analysis of studies reporting vaccine effectiveness at different time points since vaccine administration estimates the waning of protection provided by a variety of CO...

LOS ANGELES—Responding to escalating clashes between civilian activists and militarized immigration authorities, Los Angeles Mayor Karen Bass publicly urged protesters Monday not to give the Trump adm...