Neither is being unvaccinated thoughFortunately, obesity, idleness and alcoholism aren't directly contagious.
I suppose on reflection being unvaccinated - perhaps we should say being proudly unvaccinated is sort of as contagious as obesity and idleness. Although I have to say the anti-vaxers I am sadly aware of are all outliers within their family groups. Much heartache being caused by my sister's husband who refused to take it for a long time because he "didn't like people telling him what to do". My sister has MS and a much weakened immune system - what can one do in such situations short of force a full on family fissure?