I am on my 4th day of quarantine/Tamiflu, 5th day with symptoms. My husband and son are showing no sign of infection, other than both having mild tonsillitis.
My mother in law had H1N1 4 weeks ago, and my father in law did not become infected.
Is there a chance that there is something genetic in the males of the family which makes them less likely to contract ‘flu?
None that I know of. It would be wonderful for those if there were. Influenza is a varied disease caused by a whole range of different strains of influenza viruses, e.g. Asian ‘flu, Bird ‘flu, Swine ‘flu and of course common endemic seasonal ‘flu.
However people can have differing susceptibilites to infections, and each person builds up their own immunities which can greatly affect who catches it, and how badly they get it. Your husband and son probably both have mild viral tonsillitis possibly but not necessarily from the same virus as you.