Science News Roundup: Lack of side effects doesn't mean mRNA vaccine not working; mRNA shots limit breakthrough infection severity

Following is a summary of current science news briefs.

Lack of side effects doesn't mean mRNA vaccine not working; mRNA shots limit breakthrough infection severity

The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus. Lack of vaccine side effects no cause for concern