Representatives for academic researchers and smaller biotech companies contend that BARDA should disperse money to a wider variety of projects. Clinical trials for treatments, rather than vaccines, can move more quickly because the course of Covid-19 is relatively short, compared with testing a vaccine on thousands of healthy volunteers, and waiting for them to get infected. Like a vaccine, an effective drug that renders the virus less deadly could allow society to return to normal more quickly.

Updated June 24, 2020

A commentary published this month on the website of the British Journal of Sports Medicine points out that covering your face during exercise comes with issues of potential breathing restriction and discomfort and requires balancing benefits versus possible adverse events. Masks do alter exercise, says Cedric X. Bryant, the president and chief science officer of the American Council on Exercise, a nonprofit organization that funds exercise research and certifies fitness professionals. In my personal experience, he says, heart rates are higher at the same relative intensity when you wear a mask. Some people also could experience lightheadedness during familiar workouts while masked, says Len Kravitz, a professor of exercise science at the University of New Mexico.

The steroid, dexamethasone, is the first treatment shown to reduce mortality in severely ill patients, according to scientists in Britain. The drug appears to reduce inflammation caused by the immune system, protecting the tissues. In the study, dexamethasone reduced deaths of patients on ventilators by one-third, and deaths of patients on oxygen by one-fifth.

The coronavirus emergency relief package gives many American workers paid leave if they need to take time off because of the virus. It gives qualified workers two weeks of paid sick leave if they are ill, quarantined or seeking diagnosis or preventive care for coronavirus, or if they are caring for sick family members. It gives 12 weeks of paid leave to people caring for children whose schools are closed or whose child care provider is unavailable because of the coronavirus. It is the first time the United States has had widespread federally mandated paid leave, and includes people who dont typically get such benefits, like part-time and gig economy workers. But the measure excludes at least half of private-sector workers, including those at the countrys largest employers, and gives small employers significant leeway to deny leave.

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.

Touching contaminated objects and then infecting ourselves with the germs is not typically how the virus spreads. But it can happen. A number of studies of flu, rhinovirus, coronavirus and other microbes have shown that respiratory illnesses, including the new coronavirus, can spread by touching contaminated surfaces, particularly in places like day care centers, offices and hospitals. But a long chain of events has to happen for the disease to spread that way. The best way to protect yourself from coronavirus whether its surface transmission or close human contact is still social distancing, washing your hands, not touching your face and wearing masks.

A study by European scientists is the first to document a strong statistical link between genetic variations and Covid-19, the illness caused by the coronavirus. Having Type A blood was linked to a 50 percent increase in the likelihood that a patient would need to get oxygen or to go on a ventilator, according to the new study.

The unemployment rate fell to 13.3 percent in May, the Labor Department said on June 5, an unexpected improvement in the nations job market as hiring rebounded faster than economists expected. Economists had forecast the unemployment rate to increase to as much as 20 percent, after it hit 14.7 percent in April, which was the highest since the government began keeping official statistics after World War II. But the unemployment rate dipped instead, with employers adding 2.5 million jobs, after more than 20 million jobs were lost in April.

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.

If air travel is unavoidable, there are some steps you can take to protect yourself. Most important: Wash your hands often, and stop touching your face. If possible, choose a window seat. A study from Emory University found that during flu season, the safest place to sit on a plane is by a window, as people sitting in window seats had less contact with potentially sick people. Disinfect hard surfaces. When you get to your seat and your hands are clean, use disinfecting wipes to clean the hard surfaces at your seat like the head and arm rest, the seatbelt buckle, the remote, screen, seat back pocket and the tray table. If the seat is hard and nonporous or leather or pleather, you can wipe that down, too. (Using wipes on upholstered seats could lead to a wet seat and spreading of germs rather than killing them.)

If youve been exposed to the coronavirus or think you have, and have a fever or symptoms like a cough or difficulty breathing, call a doctor. They should give you advice on whether you should be tested, how to get tested, and how to seek medical treatment without potentially infecting or exposing others.

They also noted that many of the biggest pharmaceutical breakthroughs like the polio vaccine or immunotherapy for cancer originated in academic medical centers or biotech start-ups, not from large drug companies. H.H.S. said in its statement that it was working with companies of all sizes.

We think failing to focus on lung repair is not wise, said Janet Marchibroda, the president of the Alliance for Cell Therapy Now, a coalition of academic institutions, biotech companies and health systems that favor more research into cell therapies. The majority of patients who are in hospitals are dying because of lung injury.

The coronavirus outbreak has killed more than 118,000 people in the United States, and those who die often succumb to respiratory failure after the lungs become unable to provide the body with enough oxygen. In some cases, peoples immune systems go into overdrive and cause critical damage.

On Tuesday, scientists at the University of Oxford reported that a cheap, commonly used steroid, dexamethasone, reduced deaths of patients on ventilators by a third, a hopeful discovery. An experimental drug, remdesivir, has been shown to have moderate success in speeding patients recovery in early trials.

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Coronavirus Attacks the Lungs. A Federal Agency Just Halted Funding for New Lung Treatments. - The New York Times