We had a playdate and my friend's 2 year old just had his 18 month shots today. He and my 3 year old were drinking out of the same straw. I've really never been concerned about shedding, but I'm curious if there's a risk.
unlikely, but yes there is a risk specifically with the rubella portion of the mmr which is excreted in the nose and throat for up to 28 days.
If the people let government decide what foods they eat and what medicines they take, their bodies will soon be in as sorry a state as are the souls of those who live under tyranny." Thomas Jefferson.