This is true except for external parasiters However, that is really an external parasite such as ticks crawling off the mother and crawling onto a freshly hatched baby.
There are some areas of Africa where ball pythons are considered to be sacred animals and are not collected at all.
As for HIV in africa...in some areas many of the condoms are bought by children to make balls.
See film below:
http://www.pangeaday.org/filmDetail.php?id=3