<prompt> A 9-month-old infant is brought to you for immunization. The infant has previously received the first dose of OPV and DPT. What will you do?Repeat the first dose counting a freshGive the infant DTpolioGive the infant second dose of DPTOPVGive the infant a booster dose of DPTpolio  <response>: A lapse in the schedule of immunization does not necessitate reinstitution of the total course. If the second or third dose of DPT or OPV was missed or delayed,there is no need of giving all the three doses of primary vaccination schedule. Reference:Ghai essential pediatrics 6th edition Page 191 