Every year, influenza is responsible for the illness of thousands of people in the United States. In some more serious cases, it results in hospitalization and even death, especially in the very old, very young, or those with compromised immune systems. One of the most effective ways to prevent this is through immunization. When it comes to understanding the importance of flu shots Mobile AL patients will find the following information helpful.

Immunization introduces a weakened form of the influenza virus into the body, which causes it to produce antibodies against this microorganism. It takes about two weeks from when the inoculation is received for these antibodies to form. Vaccines typically offer protection against both "A" and "B" influenza types.

There are two main types of flu vaccines available, trivalent and quadrivalent. The former provides protection against three different viruses, usually the "A" viruses H1NI and H3N2, and a B influenza. The latter type affords protection from the same viruses as the trivalent, with the addition of one other B virus. It can be given as a shot, or also as a nasal spray vaccine that is suitable for individuals between the ages of 2 and 49.

If available, many physicians prefer to use the nasal spray vaccine for children aged 2 to 8 years old, but if this is not an option, they will be given a regular injection. Patients of other ages may given either an intradermal injection, regular or high-dose vaccine, depending on what the doctor considers most appropriate.

Precautions must be taken to ensure that each patient is given the appropriate vaccine for his or her age. High-dose vaccines are indicated for people over age 65, and intradermal shots are intended for those who are between 18 and 64 only. People with an allergy to eggs, will need an inoculation that is prepared using a cell culture instead.

Flu season in the United States typically begins in October and ends in May. It is recommended that everyone who is at least six months of age should receive the immunization each year prior to the start of the season.These vaccines usually become available sometime in August. Distribution continues throughout the autumn months and continues into the peak season which usually occurs around January.

The importance of getting vaccinated against the flu is highly publicized in most communities with clinics being set up in schools, workplaces, and college health centers. People can also choose to get their shots at the doctor's office or at a public health clinic. Annual immunization is necessary as it typically only provides a year's protection, and also because predominant viral strains tend to change over time.

It is still possible to get the flu after receiving an immunization, however the illness is likely to much milder in nature with less serious implications than it would be without being vaccinated. Some people will experience some minor side effects following vaccination such as a slight fever, and soreness at the injection site, and in the case of the nasal spray vaccine, there may be a headache, sore throat, or runny nose, but these symptoms do not last long and are preferable to becoming very ill with influenza.