A new strain of coronavirus is spreading in the U.S. New versions of the virus are constantly developing from mutations, or slight genetic changes that occur as the original virus copies itself inside the human body. The new variant, which originated in the U.K., is more contagious than the original, raising concerns that infections could increase quickly in the U.S. and other countries as well. Listen to learn how the new strain may be causing infections to spread more easily and what scientists say is the best way to stay safe.
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December 21, 2020
3:44
The first vaccines developed to protect people from COVID-19 have been approved by the FDA and shipped throughout the country, giving Americans hope that an end to the coronavirus pandemic is in sight. Most of the initial 2.9 million doses will be given to health care workers and people working and living in long-term care facilities. The vaccine must be kept frozen at very low temperatures, one of many factors that make nationwide distribution extremely complicated. Listen to hear more about the plan to distribute doses, what could go wrong, and how the government is preparing for possible mishaps.
Read MoreOctober 8, 2020
5:58
A recent outbreak of coronavirus infections at the White House is highlighting how superspreading events can quickly infect large numbers of people. People with COVID-19 are most infectious before they show symptoms and can unknowingly spread illness to others. The virus continues to spread in this way, creating a cluster of infections. Health experts say superspreader events are typically indoor gatherings where people are not following safety guidelines. Listen to a professor explain how COVID-19 clusters arise and how to avoid future outbreaks.
Read MoreSeptember 14, 2020
2:56
Scientists are understanding more and more about how to stay safe during the COVID-19 pandemic. In indoor spaces with poor ventilation, clouds of virus particles can stay suspended in the air and be inhaled by others, even from a distance. Fortunately, though, even a slight breeze can help disperse the coronavirus clouds, making outdoors spaces much safer. Listen to learn more about how fresh air helps protect people from infection, and what can be done to reduce risk when it is necessary to be indoors.
Read MoreMarch 16, 2020
4:32
COVID-19 has officially been declared a pandemic, a disease infecting populations throughout the world. The virus spreads easily, and once a few people have it, they can quickly infect many others with whom they have contact. A graph of the infection’s spread shows a sharp peak when the rate of infection is highest. As schools close, more people work from home, and other steps are taken to limit human interaction, scientists expect the rate of infection to slow down and the graph’s curve to flatten. Listen to learn how flattening the curve can help the health care system handle the COVID-19 outbreak, and how past epidemics can help guide today’s decisions about how to respond.
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