04/07/2016 13:39 EDT | Updated 04/08/2017 01:12 EDT

Poll: Some key gaps in Americans' knowledge about Zika virus

WASHINGTON — Americans don't know a lot about the Zika virus that is linked to birth defects and creeping steadily closer to the U.S. A new poll shows about 4 in 10 have heard little to nothing about the mosquito-borne threat.

Even among people who've been following the Zika saga at least a little, many aren't sure whether there's a vaccine or treatment (not yet) or if there's any way the virus can spread other than mosquito bites.

Still, with mosquito season fast approaching, more than half of the population supports a variety of efforts to control summer swarms — from spraying pesticides to releasing genetically modified mosquitoes. That's according to the poll conducted by The Associated Press-NORC Center for Public Affairs Research.

Lauran Neergaard And Emily Swanson, The Associated Press