As concern about the Zika virus spread this month through Latin America, troops and health workers from Mexico to Brazil were mobilized to kill the Aedes aegypti mosquito, the disease’s main carrier. They removed street-side standing water where the insects might lay eggs; went house to house teaching people to empty water barrels, flowerpots and other breeding sites; and sprayed homes, schools and gardens with pesticides. Yet with the mosquitos becoming increasingly pesticide-resistant and no Zika vaccine available, experts are touting two other potential solutions: a genetically modified mosquito that produces dead offspring, and a bacterium that prevents mosquitos from transmitting the virus. “As mosquitos become resistant to some pesticides and we lose other pesticides to regulations, we have to think outside the... [Log in to read more]