World Immunization Week is observed every year during the last week of April to highlight the use of vaccines to protect people of all ages against certain diseases. This Week aims to highlight the collective action needed and promote the use of vaccines. The 2022 theme of World Immunization Week is “Long life for all,” which acts as a reminder that vaccines have played a large role in the increased life expectancy, decreased childhood mortality, and decreased post-infection complications (which could be lifelong) from previous generations. Immunization is the fortification an individual’s immune system against infectious diseases. As per WHO, immunization activities at present save 3.5 to 5 million lives against deadly infections every year.
It is recommended that everyone 6 months of age and older should get vaccinated before the start of each flu season, with very few exceptions. Some people are more likely to get health problems from the flu, such as the elderly, pregnant women, infants, and people with medical conditions like asthma or diabetes which can be avoided by this process of immunization.