By Bill Berkrot NEW YORK (Reuters) - The Bill and Melinda Gates Foundation has turned its attention to the Zika virus outbreak, and its founders said the response to the crisis, which may be linked to devastating birth defects in South America, has been better than for the 2014 Ebola outbreak in Africa. "We got deeply involved in Ebola, and we're already getting deeply involved in Zika," said Melinda Gates in an interview ahead of release of the foundation's annual letter on Monday. "We try to bring the best scientists together, and all the best thinking together, with CDC, with WHO," to look at disease populations, mosquito control, diagnostics and vaccines, she said.