This is written in response to the previous question (Nov 18) raised, as well as to provide a brief update on the H1N1 vaccine.
- Its efficacy in published studies is anywhere between 61% to 92%. Obviously less effective if one is older, or one's immune system is less robust. On average, the vaccine will probably not trigger off a protective response in 1 of 4 persons. These figures are similar to the usual seasonal influenza vaccines. Of course, if you have already had H1N1, there is no need to get vaccinated.
- The side effect profile is the same as seasonal influenza vaccines as well. Most people with adverse events have fever, while a rare few will have a more serious adverse event. Anywhere between 0.8 to 6 persons out of every 1,000 vaccinated will develop an adverse event. In short, the vaccine is far safer than getting H1N1.