What is your threshold to use nitazoxanide for treatment of cryptosporidium in an immunocompetent patient?

Nitazoxanide can be useful for the treatment of cryptosporidiosis in immunocompetent patients, although the reality is that most healthy people will eventually clear the infection and develop at least partially protective immunity. I would consider treatment if an individual patient were very symptomatic, since nitazoxanide should help shorten the duration of symptoms. For someone with a mild infection, I would let it take a natural course without treatment.