from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Infection, such as recurrent boils, caused by bacteria, viruses, or parasites that persist on or in the body.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The
infectionof a primary hostwith a parasite, particularly a helminth, in such a way that the complete life cycleof the parasite happens in a single organism, without the involvement of another host.
from Wiktionary, Creative Commons Attribution/Share-Alike License
It does not make any more sense than a claim that act of sodomy causes damage to walls of the rectum of a gay person on receptive end of that practice and causes autoinfection of abdominal cavity with bacteria and viruses contained in a fecal matter leaking into abdomen.
, it is thought re-infection from other people or other sources is less likely than autoinfection.