How are vaccines administered to infants?

Vaccines for infants are administered via various routes. BCG is given intradermally in the left upper arm, Hepatitis B birth dose intramuscularly in the antero-lateral side of the mid-thigh, and OPV doses orally. Pentavalent, Rotavirus, IPV, and JE-1 are given intramuscularly or intradermally, and Measles/MR is administered subcutaneously.