Infectious Diseases

Researchers found the waning in effectiveness holds true even after boosters.

The U.S. Food and Drug Administration decision makes GSK’s shot, called Arexvy, the first of several potential vaccines in the pipeline for RSV to be licensed anywhere.

Researchers combed through an HIV surveillance database and found 33 babies born in Canada between 2012 and 2021 were infected during pregnancy or delivery.

An outbreak was declared Jan. 26, but AHS says the number of cases has increased by 120 over the last week.

Bivalent Pfizer and Moderna vaccines are now authorized for all doses, while Pfizer and Moderna monovalent vaccines are no longer authorized for use.

Nicknamed "Arcturus," this strain does not appear to be more dangerous than current strains, but may cause conjunctivitis symptoms in children.

Nirsevimab, also known by its brand name Beyfortus, was authorized on April 19. It was developed by AstraZeneca and Sanofi.

In addition to Lyme disease, four other tick-borne diseases have started to emerge in Canada—anaplasmosis, babesiosis, Powassan virus and Borrelia miyamotoi disease.