Vaccinations

Vaccines can be a very effective way of preventing a massive outbreak of disease. An inactivated vaccine contains a small about of the killed virus. Each seasonal influenza vaccine has three strains of viruses. It has one A (H3N2) virus, one B virus, and one seasonal A (H1N1) virus. The regular seasonal A (H1N1) is not the 2009 version of H1N1 that outbroke throughout the world. The viruses in the seasonal influenza vaccine changes each year. Scientists determine which strains go in the vaccine based on predictions of which will spread during that year. After about two weeks after the vaccine is received, antibodies capable of fighting the strains of influenza will start to form in the body.
The effectiveness of vaccines can vary. The CDC reports that vaccination efficiency can depend on the age and health of the person receiving the vaccine. It can also depend on how similar the virus in the vaccine is to the virus that is circulating among the human population. Side effects can also vary between different vaccines. The common influenza vaccine may cause soreness, redness, or swelling at the injection site, along with a low grade fever and aches. The effects usually occur between one and two days after receiving the shot.
I believe that vaccines are worth the risk. They can help prevent you from getting the virus. They also help control the spread of the virus among the human population in general.