The fastest-moving project is that of Scott O'Neill, a biologist at the University of Queensland, Australia.
Five years ago, Dr. O'Neill
got $7 million to try to infect mosquitoes with a strain of wolbachia bacteria that didn't kill mosquitoes outright, but made them die before they got old.
The advantage is that a female must be "middle-aged" - about 14 days - before she
can pick up the dengue fever virus from one human, see it mature in her
gut and then pass it on to another human.
lives long enough to take one blood meal and lay eggs, she
never transmits dengue, but the bacteria is under no Darwinian pressure to disappear from the mosquito population.
passes it to her
embryos, so they too lead shortened lives.