Some 2-week coronavirus quarantines can be cut to 10 or 7 days, CDC says

The standard 14-day coronavirus quarantines potentially can be shortened to 10 days or even seven, according to revised guidance issued Wednesday by the Centers for Disease Control and Prevention in an effort to boost compliance with one of the most important tools for limiting spread of the virus.

The move reflects the agency’s recognition that the twoweek quarantine rule is onerous for many people and that most of the public health benefit from quarantining people exposed to the virus can be gained with a more flexible approach.

The CDC acknowledges that this new guidance involves a trade-off. The existing 14-day recommendation reflects the ability of the virus to incubate for a long period before symptoms appear. But lack of compliance — for example, among people who are reluctant to talk to contact tracers because they fear they or their friends or family members could lose a job or two weeks of income — can undermine the public health benefit from that standard.

“We are accepting some risk in exchange for reduction in burden that will allow us to better control this epidemic,” said a senior federal official, who spoke on the condition of anonymity to provide context for the guidance in advance of a CDC news briefing Wednesday morning.

CDC officials also announced new guidance for testing before and after traveling: Someone planning a trip should get a test one to three days in advance and then be tested again three to five days after returning. And the agency reiterated its pre-Thanksgiving recommendation against travel this holiday season amid a massive spike in coronavirus infections nationwide that is filling hospitals with covid-19 patients and claiming on average of more than 1,500 lives every day.

“Cases are rising. Hospitalizations are increasing. Deaths are increasing. We need to try to bend the curve, stop this exponential increase,” Henry Walke, the CDC incident manager for the coronavirus, said during the news briefing. He emphasized the importance of preventing the initial infections: “We’re really asking the American public to prevent these infections, avoid travel, wash their hands, wear a mask and maintain distance.”

Cindy Friedman, head of the CDC’s travel branch, noted that millions of people traveled during the Thanksgiving weekend, despite the recommendations of her agency, and “this can translate into hundreds of thousands of additional infections.”

The 14-day quarantine recommendation from the CDC remains in effect, but the revised guidance being given to public health agencies offers two “acceptable alternative quarantine periods,” Walke said. If a community has adequate testing resources, the quarantine can end after just seven days if a person tests negative for the virus at some point in the final two days of that period. The test can be either a rapid-response antigen test or the more reliable PCR test that takes longer to process.

Alternatively, the quarantine can end after 10 days without a test if a person monitors any potential symptoms, such as fever, on a daily basis and has none. The exposed person is expected to continue monitoring symptoms and wearing a mask for the full 14 days despite discontinuing quarantine.

The CDC decided to craft a quarantine policy that would capture the vast majority of potentially infectious people but also lead to higher compliance. That would boost the likelihood that someone would answer the phone if a local public health department called as part of a contacttracing effort, said John Brooks, chief medical officer for the CDC coronavirus response.

“If a person is willing to be more compliant with a shorter quarantine, they may also be more willing to share the names of potential contacts,” Brooks said at the news briefing.