Despite being amongst the most common STIs, the infection is relatively understudied and there remains much to understand about it.  We do know for sure that the correct management was for both you and your husband to be treated.  We know that trichomoniasis can remain present asymptomatically for months or even years.  Current data indicate that nearly all trichamonas infections occur as the result of sexual contact and while in science we can never say never, non-sexual acquisition is exceedingly rare.  

Can I ask how the diagnosis was made?  Occasionally PAP smears yield falsely positive results for trichamonas.  EWH