The governor’s office says Kemp, a Republican, was referring to fresh guidance from the Centers for Disease Control and Prevention, which said earlier this week that exposure risk could happen two days before symptoms begin. But Kemp’s office, in response to questions about his public pronouncement, pointed to public statements they’d put out for weeks about the possibility of asymptomatic people spreading the virus.
“What we’ve been telling people from directives from the CDC for weeks now that if you start feeling bad, stay home. Those individuals could have been infecting people before they ever felt bad. But we didn’t know that until the last 24 hours,” Kemp said.
On Monday, the CDC updated its guidance on the period of exposure risk, upgrading it from the “onset of symptoms” to “48 hours before symptom onset.”
That shift was a “game changer” that moved Kemp to issue the shelter in place order for all of Georgia, he said at Wednesday’s news conference.
But as of January 30, the CDC was noting in its guidance for managing patients with coronavirus that “clinical presentation among reported cases of 2019-nCoV infection varies in severity from asymptomatic infection or mild illness to severe or fatal illness.”
“We know there is virus spread before you develop symptoms, and then we know that there’s a large group — we don’t know the precise percent yet — that actually is asymptomatic or has such mild cases that they continue to spread the virus,” she said at the White House on March 16.
When asked by CNN how Kemp could know of the possibility of asymptomatic spread for weeks but say Wednesday that “we didn’t know that until the last 24 hours,” Cody Hall, a spokesman, said Kemp “was referring to the updated CDC guidelines and Dr. Redfield’s statements about the rate of transmission and prevalence of asymptomatic transmission — not the existence of asymptomatic transmission.”
Meanwhile, correspondence among Georgia officials further suggests the risk of asymptomatic transmission was known for weeks before Kemp’s order.
Asked about the disparity between Kemp’s claim this week that state officials didn’t know people could transmit the virus without symptoms despite the state’s top health official having been told just that a month ago, Nancy Nydam, a spokeswoman for Toomey, pointed CNN to a news release from Thursday explaining Kemp’s shelter in place order.
“For weeks it has been known that people who were positive for COVID-19 but did not have symptoms likely were able to transmit the virus,” says the release, again reiterating Kemp’s citation of the updated CDC guidance this week regarding potential spread among asymptomatic people.