yes it is possible that the glove was contaminated by any number of pathogens since you don't know how this glove was used. teach your children to never pick up stuff like this on the ground or they may be bringing home used condoms or syringes. nothing you can do now but wait but most of the time contamination on intact skin of the hands in someone who has a good immune system will not result in any infection. needless to say i am sure you wash the heck out of their hands during your lecture about not touching these things.
my kids found a surgical glove that may have been used on the ground by a storm drain. could they get anything?