The impact of negative news on social media about immunization causes doubts about vaccines, so that the immunization program is hampered. The importance of the immunization program : stimulating individual immunity and population immunity so that it can eradicate disease. The components in the vaccine : Antigen : viral-bacteria (live attenuated, inactive) subunits, toxoid. Stabilizer : MgCl², MgSO⁴. Adjuvant : Al. Antibiotics : Neomycin. Preservatives : Thiomersal, formaldehyde, phenol derivatives. Vaccine route : Oral. Intradermal. Subcutaneous. Intramuscular. Vaccines are different from drugs, vaccines are given to healthy people. Vaccine recipients must not be sick. Vaccine safety is one part of pharmacacovigilance. The use of millions of vaccine doses in each country is always monitored by WHO. Vaccine safety test : Clinical trial : Phase 1 ➡️ Phase 2 ➡️ Phase 3. Post parting surveillance : Phase 4 vaccine safety test All vaccines used up to millions of doses have passed the
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