S.A.
Though I can understand your point of view especially when it comes to germs because so many don't wash their hands...but....
1.) He's 11 months old and he's cute. Are you afraid someone is going to snatch him?
2.) Studies show that kids that are too sheltered from germs and illness actually suffer more as an adult or when they start school because they have no immunity.
3.) If someone tried to pick up my child, I would have an issue...but a friendly little touch on the arm harmless. Keep some handsantizer wipes handy if they touch his hands and you are afraid of germs.
I really think it is pretty sad when people can't be friendly anymore. They are admiring your little one it is natural for humans to touch. If you don't want them to touch your little one, then don't stop to talk...make sure you keep your distance...or just say something like "he's been sick so much lately, please don't be offended, but I don't want anyone to touch him....
They can think what they want from that statement.
But maybe I'm just old fashioned and a little too country. I smile at people, talk to strangers, hold doors, compliment little ones and will on occasion if I know someone gently pet a little one on the back so as not to spread germs but offer a "kind hand of human contact" that says not everyone is a bad guy. How does that silly old song go "all we need is love". Not that I'm promoting any hippie attitudes...but a little innocent love isn't something to be alarmed about....but that's just me.