Injecting ‘Influenza vaccine’ is necessary? Before ‘traveling’

Because each year there are different popular strains that spread. Boosting immunity to be ready for new strains is therefore always necessary.

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Know the ‘strains’ of the virus to choose the right protection. The influenza virus that is circulating worldwide can be divided into two major strains: strain A and strain B. In the past, influenza was mainly caused by strain A, which includes A/H1N1 and A/H3N2. However, it has been found that there are more cases of patients infected with strain B of the influenza virus. Therefore, the World Health Organization (WHO) has recommended the vaccination for influenza prevention in both children and adults, especially in various high-risk groups. It not only helps prevent the disease but also reduces the severity when it occurs.

But why… does it have to be the ‘4-strain influenza vaccine’? Let’s understand first that there are two types of influenza vaccines currently available: the 3-strain influenza vaccine and the 4-strain influenza vaccine. The difference between these two types is that the 4-strain influenza vaccine covers more strains of the virus. The 4 strains that should be protected against in 2022 are:

• Influenza type A, Victoria strain (H1N1)
• Influenza type A, Darwin strain (H3N2)
• Influenza type B, Austria strain
• Influenza type B, Phuket strain

Who should receive the ‘4-strain influenza vaccine’?

• Patients with chronic diseases, including diabetes, cerebrovascular disease, kidney failure, asthma, obstructive pulmonary disease, heart disease, and cancer undergoing chemotherapy.
• Pregnant women at 4 months or more gestation.
• Individuals aged 65 years or older.
• Infants aged 6 months to 2 years.
• Individuals with severe disabilities who cannot care for themselves.
• Patients with thalassemia.
•  Individuals with weakened immune systems and those infected with HIV.
• Individuals planning to travel abroad, especially in Europe and America.
• Individuals likely to be in crowded places or places with a large number of people, such as those attending religious ceremonies or sporting events and participating in various festivals.

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