Senior author and McMaster University immunologist Dawn Bowdish says the study results are surprising because they challenge the current thinking about hybrid immunity.
Doctors have been calling for an RSV vaccine for seniors because although the virus is common, older people are much more likely to become severely ill and require hospitalization.
A Health Canada safety brief examines the link between vaccination with Pfizer’s Comirnaty or Moderna’s Spikevax and the risk of heavy menstrual bleeding.