vaccination has done at 16 weeks the swelling has reduced after 3 days but after one month again sweeling is there at injection site..now my baby is 5 mnths old..what should we do

A. Maybe some minor infection is building up inside so you should one time get a check with your paediatrician the problem has to examine it personally and I was on that basis only for the treatment for the child and we suggested whatever would be required as per the issue