Thanks for your query,based on the facts that you have posted it appears that your husband has acquired Gonorrhoea
after having sex with other woman which was treated with antibiotics
.However during his recent visit your Dr has reported it to be incompletely cured Iit is possible that it has not been completely cured .
This is known fact that infection remains dormant for couple of months and recurs again without any sexual contact especially if the Gonococcal infection
is incompletely and iltreated