Influenza Vaccines are designed to prevent the spread of influenza virus. There are two main types of influenza vaccines: whole-virus vaccines and inactivated vaccines. Each type is a unique mixture of influenza virus parts that have been chemically inactivated with formalin. The trivalent inactivated vaccine is the most commonly used and is comprised of three influenza virus types: influenza A, influenza B, and influenza C.
Viruses that cause influenza have the potential to change from season to season and even within a flu season. That's why experts must carefully choose the viruses that will be included in a flu vaccine months in advance. However, this selection process can produce less-than-optimal matches. Consequently, it is crucial to have a complete understanding of the process of deciding which strains are included in the vaccine. Vaccination against influenza is recommended for pregnant women in their third trimester. Vaccination during pregnancy is important as the antibodies of the mother pass to the fetus. Vaccinating during pregnancy also helps reduce the risk of influenza-related hospitalizations during early infancy. If a woman is pregnant, she should get the vaccine as soon as it becomes available. However, if she has nasal congestion, she should defer the vaccine until the nasal congestion clears up. If the congestion persists, she can look for an alternative vaccine. Influenza Vaccines are the most effective way to protect against the spread of this infectious disease. Influenza is a serious infection of the upper airway caused by influenza A or B viruses. It is spread by coughing and sneezing and through contact with tiny droplets of the virus. Flu vaccines are available for children aged three years and older. Some vaccines are quadrivalent. These quadrivalent vaccines protect against two influenza A and two influenza B viruses. Influenza Vaccines have a range of benefits for both adults and children. They protect against infection caused by the flu in pregnant women and protect their infants from influenza infection for several months after birth. Vaccines have been used for decades and have been proven to be safe during pregnancy. While flu vaccines are generally safe, some people experience side effects. However, these effects are mild and usually resolve themselves within a few days. A few people may experience fainting, ringing in the ears, or vision changes, however, the chances of serious side effects are extremely small. The CDC's Vaccine Adverse Event Reporting System is a good resource for reporting side effects. Influenza Vaccines can reduce the number of flu-related doctors visits and hospitalizations by nearly half. According to a 2018 study, vaccinated adults with the flu spent four days less in the hospital. Vaccines also reduce the severity of flu-related hospitalization. This means that they save the lives of tens of thousands of people each year. Ultimately, the production of vaccine depends on the ability to produce high vaccine yields at an acceptable cost. That's why it's important to produce vaccines that are antigenically matched to influenza virus strains circulating in human populations. It's important to make the decision based on WHO influenza activity reports.
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