If I were born in 1950 do I have immunity to the current H1N1 Influenza?

Answer 1

No, sorry. The current strain of "Swine Flu" (A-H1N1/09 Virus) is very different from the prior strains of H1N1 Influenza that have surfaced from time to time over the years since first identified in the 1930's. This one has genetic material from two strains of hog flu (Asian and European), along with the human flu, and some genomes from Avian (bird) flu. Because it is so different from those in the past, it is moving quickly in the pandemic across the world. Luckily, it is milder than it had potential to be, so it has a lower mortality rate than caused initial concern. No one will have immunity to this unless they take the vaccination specifically being developed from "seed viruses" at the present time, or unless they contract the virus. Both of those will cause life long immunity.

Although the occurrence of this virus among those aged 65 and older is much lower than is typical in other influenza strains and much lower than predicted for this one. There is some speculation that it is because of their possible exposure to the strain in the 1930's but it is under study to try to determine what the factors are in this unexpected result. You are much too young for this advantage.