Flu symptom that's MUCH worse this year and makes horror new H3N2 strain more deadly

New H3N2 strain tends to cause more severe illness amid expectation that Britain is about to face ‘worst ever’ flu season

A new flu strain on the rise in Britain is causing more severe illness even in otherwise healthy people.

Doctors have warned H3N2 ‘can kill’ because it has mutated to be particularly aggressive. Vaccines still offer significant protection - and often prevent serious illness - but less so than previous years.

H3N2 symptoms are generally similar to those of other influenza strains but with a few key differences. While many people will experience an unpleasant, but relatively mild illness, experts warn there is a higher risk of deadly complications such as sepsis with this strain.

The Royal College of Paediatrics and Child Health (RCPCH) has warned the new strain can