Quebec’s immunization committee is recommending a booster dose of the monovalent XBB.1.5 COVID-19 vaccine this spring to seniors ages 80 and over as well as to people who are immunocompromised or on dialysis.

The COVID-19 situation continues to evolve and certain parts of the population remain more vulnerable to the virus, the Institut national de santé publique du Québec (INSPQ) said this week in publishing its vaccination recommendations.

A person vaccinated against COVID-19 is less likely to develop serious illness, but a gradual decrease in this protection is observed over a period of six months following vaccination. A booster dose is therefore necessary to maintain adequate protection, the INSPQ notes in its most recent opinion.