Leech

Leeches were the Biological creators of the T-Virus, infected with Progenitor. During the Raccoon City Outbreak, other leeches were infected with already existent T, making their mutations would be diffent at some level.

Experimental Infection stages
Marcus's 1978 test leeches 'evolved' unlike later experiments. The following shows how they were treated during their experiment.


 * Day 1 - Leeches infected
 * Day 7 - Rapid growth. They grow to twice their normal size. Signs of transformation emerging.
 * Within an hour later - Spawning successful, they double their numbers in an hour.
 * Later on - Ravenous appetites leads them to cannibalism. Hastened to increase food supply, but lost 2.
 * Day 32 - Leeches are provided with live feed. Half of the Leeches are killed off by the feed. Howether the leeches begin to learn hunting experience and exhibit group attack behavior. They also cease cannibalism. Their evolution is exceeding expectations.
 * Day 131 - The leeches no longer exhibit individual behavior, even when not feeding, they move as a collective. They consume everything offered with remarkable efficiency.
 * Day 142 - Marcus’ report on the leech growth is completed: A day worthy of commemoration. Today they began to mimic me! Surely they recognize their father... Wonderful children, No one will take you away...

Infection caused by Leech
The Eclyptic Express was attacked by several hundred Leeches. At least 3 to a person. By calculation, Infected Leeches cause infection quicker than the normal Zombie Bite.

It takes less than 2 hours to infect Humans. Howether, if a queen infects a host, 'she' enters inside the hosts body. The host will eventualy be able to transform into a 'leech-like ' form.

Hospital Leeches
During the outbreak that claimed Raccoon City, the doctors of the Raccoon General Hospital observed that the leeches of the sewer systems had been infected with the T-Virus. These leeches also displayed some hive-mind characteristics similar to Marcus' leeches, but rather than bonding together to create leech zombies, they would swarm a host and imbue it with such abilities. This Leech Man was somewhat intelligent, crawling through ventilation ducts to suprise it's prey. It could be brought down by intense heat, though the leeches would not fall for the same trick twice.

Trivia

 * In the RE universe there is actually two types of leechs. There are Marcus' Leechs and the leeches from Resident Evil Outbreak: File #1.

Sanguisuga