As autumn sets in and temperatures fall across the northern hemisphere, vaccination campaigns are getting underway. Vaccination is not just the most effective way to prevent severe forms of infection and avoid hospital admissions – it also protects health systems, preventing them from becoming overburdened when annual case numbers reach their peak.
The viruses that cause flu and COVID are constantly evolving, meaning we gradually lose any immunity we have acquired over time. The vaccines used in each campaign are therefore specifically formulated and adapted each year, in response to the most recent variants identified by the World Health Organization’s global surveillance and monitoring networks.
