Dr. Deborah L. Birx, the Trump administration’s coronavirus coordinator, said on the CNN program “State of the Union” on Sunday that the nation was in a “new phase” of the coronavirus epidemic that was much more sprawling across the country than last spring’s outbreaks in major cities like New York and Seattle.
She recommended that people living in communities where cases are surging should consider wearing a mask at home, if they live with someone who is especially vulnerable because of age or underlying medical conditions.
“What we are seeing today is different from March and April — it is extraordinarily widespread,” she said. “It’s into the rural as equal urban areas. So everybody who lives in a rural area, you are not immune.”
Dr. Birx emphasized the significance of asymptomatic transmission, and said that the White House coronavirus task force was working to make sure Americans in affected communities understood this risk. “If you have an outbreak in your rural area or in your city, you need to really consider wearing a mask at home, assuming that you’re positive if you have individuals in your home with comorbidities,” like respiratory problems or diabetes.
Dr. Birx said that, in her recent travels, she had seen “all of America moving,” making it doubly important for people to understand the attendant risks, given that cases have surged in many popular holiday destinations. “If you’ve chosen to go on vacation into a hot spot, you really need to come back and assume you’re infected,” she said.
Infected people without symptoms can unwittingly seed numerous chains of infection. “By the time you wait for someone to come forward to the emergency room, you have widespread community spread,” Dr. Birx said.
In some communities seeing recent outbreaks, household transmission has been a huge factor, public health experts say.
Both she and Adm. Brett Giroir, an assistant secretary at the U.S. Department of Health and Human Services, emphasized the importance of prevention methods, like wide-scale mask-wearing, hand-washing, and avoiding crowded indoor spaces like bars or restaurants and mass social gatherings. Admiral Giroir said some of the efforts seemed to be helping in recent weeks to reduce the number of cases in Arizona, as well as in communities in Texas and Florida — all states that have been hard-hit this summer.
He repeatedly pointed to mask-wearing as perhaps the single-most effective preventive measure in communities experiencing outbreaks. “Wearing a mask is incredibly important but we have to have like 85 or 90 percent of individuals wearing a mask and avoiding crowds,” he said. “That is essentially — gives you the same outcome as a complete shutdown.”
Asked if he was recommending a national mask mandate, Admiral Giroir said, “The public health message is we’ve got to have mask-wearing.” He added: “If we don’t do that, and if we don’t limit the indoor crowded spaces, the virus will continue to run.”
The Coronavirus Outbreak ›
Frequently Asked Questions
Updated July 27, 2020
Should I refinance my mortgage?
- It could be a good idea, because mortgage rates have never been lower. Refinancing requests have pushed mortgage applications to some of the highest levels since 2008, so be prepared to get in line. But defaults are also up, so if you’re thinking about buying a home, be aware that some lenders have tightened their standards.
What is school going to look like in September?
- It is unlikely that many schools will return to a normal schedule this fall, requiring the grind of online learning, makeshift child care and stunted workdays to continue. California’s two largest public school districts — Los Angeles and San Diego — said on July 13, that instruction will be remote-only in the fall, citing concerns that surging coronavirus infections in their areas pose too dire a risk for students and teachers. Together, the two districts enroll some 825,000 students. They are the largest in the country so far to abandon plans for even a partial physical return to classrooms when they reopen in August. For other districts, the solution won’t be an all-or-nothing approach. Many systems, including the nation’s largest, New York City, are devising hybrid plans that involve spending some days in classrooms and other days online. There’s no national policy on this yet, so check with your municipal school system regularly to see what is happening in your community.
Is the coronavirus airborne?
- The coronavirus can stay aloft for hours in tiny droplets in stagnant air, infecting people as they inhale, mounting scientific evidence suggests. This risk is highest in crowded indoor spaces with poor ventilation, and may help explain super-spreading events reported in meatpacking plants, churches and restaurants. It’s unclear how often the virus is spread via these tiny droplets, or aerosols, compared with larger droplets that are expelled when a sick person coughs or sneezes, or transmitted through contact with contaminated surfaces, said Linsey Marr, an aerosol expert at Virginia Tech. Aerosols are released even when a person without symptoms exhales, talks or sings, according to Dr. Marr and more than 200 other experts, who have outlined the evidence in an open letter to the World Health Organization.
What are the symptoms of coronavirus?
- Common symptoms include fever, a dry cough, fatigue and difficulty breathing or shortness of breath. Some of these symptoms overlap with those of the flu, making detection difficult, but runny noses and stuffy sinuses are less common. The C.D.C. has also added chills, muscle pain, sore throat, headache and a new loss of the sense of taste or smell as symptoms to look out for. Most people fall ill five to seven days after exposure, but symptoms may appear in as few as two days or as many as 14 days.
Does asymptomatic transmission of Covid-19 happen?
- So far, the evidence seems to show it does. A widely cited paper published in April suggests that people are most infectious about two days before the onset of coronavirus symptoms and estimated that 44 percent of new infections were a result of transmission from people who were not yet showing symptoms. Recently, a top expert at the World Health Organization stated that transmission of the coronavirus by people who did not have symptoms was “very rare,” but she later walked back that statement.
Another guest on CNN on Sunday, Dr. Ashish Jha, dean of the Brown University School of Public Health, said that, in many areas where cases are surging, the availability of tests was badly lagging. “In 18, 20 states, the number of tests being done is actually falling and falling because our testing system is under such strain that we just can’t even deliver the test today that we were doing two weeks ago,” he said. “That’s very concerning because when cases are rising, and your number of tests are falling, that’s a recipe for disaster.”
On NBC’s “Meet the Press,” Admiral Giroir defended the nation’s testing program, noting it has exponentially been increased in recent months although there are still delays in getting results. He said that both testing and contact tracing efforts were crucial responses, but not particularly helpful in large, communitywide outbreaks.
“When you have a widespread, multifocal outbreak where many people are asymptomatic, testing and tracing are of limited utility versus public health policy measures like mask-wearing, like closing indoor crowded spaces,” Admiral Giroir said. “So, yes, contact tracing is important, but it’s much less important right now than the public policy mitigation measures.”
Despite encouraging signs in some states fighting to contain the summer outbreaks, Admiral Giroir said, the true cost of those infections will only be clear in the weeks to come: “We are very concerned and this is a very serious point, and deaths will continue to increase for the next few weeks” because deaths tend to lag behind case counts.