Listeriosis is a disease caused by infection with the bacterium Listeria monocytogenes, and it is most often contracted after eating contaminated foods or liquids. Listeriosis most commonly affects newborns, the elderly, pregnant women, and those individuals with a poorly functioning immune system (immunocompromised).
I have been on Plaquenil and can tell you my diarrhea started within days of starting the med. My doctor warned me that diarrhea and weight loss were side effects. I said, Well, I am usually very constipated and could stand to lose 10 pounds so this could be a good thing.. haha.
Plaquenil (hydroxychloroquine) belongs to a group of medicines called quinolines. Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria.