Is there an immunization for babies at 4 weeks? And is it advisable to give paracetamol or any other analgesic before or after an immunization in order to ease pain/discomfort?
NO, there's no immunization at 4 weeks. Below is the immunization chart

⦁ At birth……BCG, OPV, HBV
⦁ 6 weeks…..Penta, OPV ⦁ 10 weeks…Penta; OPV
⦁ 14 weeks…Penta, OPV
⦁ 9 months…Measles, yellow fever
⦁ Vitamin A recommended every 6 months from age 6 months to 5years