Inoculation is carried out to prevent various contagious diseases primarily by active or passive immunization by inoculating with live attenuated or inactivated vaccines.
The contagious diseases against which inoculation is mandatory for infants include BCG (intra-dermal), B-type hepatitis, DTaP,
Td, polio, MMR, Japanese B encephalitis (inactivated vaccine), varicella and influenza, typhoid, and Korean hemorrhagic fever,
against which inoculation is recommended for high risk groups. Inoculation against such diseases is available at public health centers or hospitals.