Hello. I would ike to answer your querry here. please be asssured that its not a big issue and you need not be worried . typhoid vaccine is given via intra muscular route. although it needs some time to develop antibodies for protection, be assured that once injected properly, it is not just going to leak out of the inj site. reaction to vaccines is also very uncommon and they usually do not present as the one you are decribing. i think the cause is unrelated to vaccination and that you have attained immunity to the same. hope this was helpful please do leave your reviews of the answer and your valuable feedback regards, Dr. Jay SIngh