Seasonal flu vaccines include H1N1 strains: Doctors anticipate H1N1 may still be circulating during the fall and winter months, but a new flu vaccination formula means, for the most part, you and your little ones will only each need one flu shot. However, as of 2011, the same flu vaccination formula from 2010 is being administered -- making it the fourth time in the past 25 years that the formula hasn't changed in at least one of the vaccine strains.
Everyone over the age of 6 months should get the vaccine: The Centers for Disease Control and Prevention (CDC) now recommends an annual flu shot for everyone over 6 months old (in 2009 the vaccine was only recommended for children under 18, adults over 49, and those at special risk because of a medical condition). All pregnant women are also now recommended to have the vaccine, regardless of what trimester they are in. Even if you have received both the seasonal flu shot and the H1N1 vaccine before, receiving a new vaccine is recommended since immunity decreases over time (fading significantly after six to eight months) and each year's shot includes protection against a new strain. As mentioned above, the strain available for 2011 is the still the same as 2010.