Pfizer has filed a lawsuit against Metsera, Metsera’s board of directors and Novo Nordisk, claiming they breached a merger agreement. The lawsuit, filed in the U.S. District Court for the District of ...

Lyme disease is an illness caused by bacteria most commonly spread to humans from ticks. It can cause arthritis, muscle weakness and pain.

(Bloomberg) -- Pfizer Inc. said its experimental Lyme disease vaccine was 73% effective against the tick-borne illness, a lackluster result as fewer-than-expected infections in the pivotal study made ...