I tutor one of the orphanage counselors regularly. We were covering a certain topic and I asked her what she does to avoid getting the flu.
Her first response was that public events and social activities should be canceled for a time. Schools, etc. should be closed to prevent sickness from spreading further.
Then I asked her about her personal approach. She went to her room and returned with a little pouch on a string and explained that one of the other counselors had sewn a bunch by hand for them all to wear.
The woman whom I teach describes herself as "Muslim," but doesn't practice, as far as I know. Meanwhile, the counselor who sewed the pouches is Russian Orthodox.
"What do you do with it?" I asked, fearing some kind of witchcraft. Even among Russian Orthodox believers, some remedies border on paganism.
"You put garlic inside," she said. That wasn't as bad as I thought. If you can eat garlic as a remedy, maybe wearing it also does something? Not something I would try, but...to each his own.