Definitely. Disease is spread by contact with "other". I am immune to my  own 
germs and the germs of my loved ones and neighborhood.
 
Thanx for the reminder. I tend to think of  Chinese shipping crates as  "my 
neighborhood" but I live in LA now and crates often carry more than  parasites 
and cargo. Human traffickers move people in them, often sick people.  Someone 
who sells a crate  is not going to mention the stow away's with TB  they found.
 
Harper