A flu shot contains several strains but the success of vaccination depends on the strain of seasonal flu circulating and other factors. Photo: Getty Images / AFP
Early childhood flu exposure may determine immunity in later life, but not all strains are equal: scientists
- People infected with H1N1 can fight off the H3N2 strain but the reverse is not necessarily true, finds paper
- Influenza immunity findings add weight to the argument that children should be vaccinated but the success of flu shots depends on several factors
A flu shot contains several strains but the success of vaccination depends on the strain of seasonal flu circulating and other factors. Photo: Getty Images / AFP
