Fast-spreading Coronavirus Variants Raise Concerns
2021-01-28
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1Worldwide coronavirus cases passed 100 million Wednesday as countries struggle with new variants of the virus and a limited supply of vaccine.
2The worst-affected countries include the United States, India, Brazil and those in Europe.
3More than 2.1 million people have died from COVID-19, based on information from the Johns Hopkins University Coronavirus Center.
4At this time, the U.S. Centers for Disease Control and Prevention (CDC) says there is no evidence that new coronavirus variants cause more severe illness or increased risk of death.
5However, the CDC adds that scientists are still working to understand how easily the new forms might spread.
6They also want to find out whether they might cause more severe illness or whether currently approved vaccines will protect people against them.
7Three of the new coronavirus variants were found to have come from three countries: Britain, South Africa and Brazil.
8In Britain, a coronavirus variant known as B.1.1.7 was first recognized in September 2020.
9It quickly spread in southern Britain including London.
10It has since spread throughout Europe, the United States and Canada.
11Health organizations say this variant spreads more easily and quickly than others.
12But there is no evidence that it causes more severe illness or increased risk of death.
13In South Africa, another variant called 501Y.V2 was found in early October.
14There have been cases caused by this variant in 20 countries including Australia and Canada, but not in the U.S.
15The variant is also known as B.1.351 and shares some genetic changes similar to the one in Britain.
16Scientists are concerned that antibodies from a small number of people who had recovered from COVID-19 or received a vaccine were less effective against this variant.
17The P.1 coronavirus variant was first identified in four travelers from Brazil who were tested at Haneda airport outside Tokyo in January.
18The variant, however, could have been around much earlier in Brazil and has spread to many countries including Germany and South Korea.
19This week, the U.S. has also confirmed its first case of the variant in Minnesota.
20The CDC says early evidence shows that antibodies from a coronavirus infection or vaccine might not have the ability to recognize the P.1 variant.
21Like other viruses, the CDC says SARS-CoV-2, the coronavirus that causes COVID-19, is always changing and has been changing all along.
22Sometimes new variants appear and disappear.
23Other times, new variants appear and spread across many countries.
24Daniel Rhoads is a microbiologist and pathologist with the Cleveland Clinic.
25He said, "Although this is concerning, it's not really surprising - we've been watching for this and more or less expecting it."
26Earlier in the pandemic, other variants including D614G and L452R appeared.
27However, the new variants are receiving attention now because they seem to spread more easily and quickly, which may lead to more cases of COVID-19.
28Another concern is whether approved vaccines like those from Pfizer and BioNTech or Moderna could be effective against them.
29Caitlin Rivers is an epidemiologist at the Johns Hopkins Center for Health Security.
30She told the Associated Press, "I'm worried that the variants might be throwing us a curveball."
31That means the variant could present an unexpected and difficult problem.
32The U.S. government's top infectious disease expert, Dr. Anthony Fauci, said scientists are studying vaccine measures to deal with the new variants.
33Moderna announced on Monday that it is testing an additional booster of its vaccine against the new variants.
34Pfizer, which makes a similar COVID-19 vaccine, said its study shows the shot to be effective against the variant in Britain, but questions remain about those found in South Africa and Brazil.
35American drug-maker Johnson and Johnson plans to report its vaccine study next week.
36The late-stage trials are being held in the United States, South Africa and Brazil.
37Scientists expect the results will show how well it works against the new variants.
38The CDC says it is working with other public health agencies to monitor the situation closely and to look for new COVID-19 variants.
39It also has workers on the ground to study and investigate the new variants.
40The health agency advises that increasing public health measures such as vaccination, physical distancing, use of cloth coverings and hand washing will help limit the spread of the new variants.
41On Tuesday, the U.S. announced that it has banned travelers from Europe, Britain, Brazil, Ireland and South Africa.
42Other countries on the restricted list include China and Iran.
43In Europe, Belgium has banned all nonessential travel until March.
44And France may soon begin a third lockdown if its 12-hour daily curfew does not slow the spread of new infections.
45I'm Mario Ritter, Jr. And I'm Jonathan Evans.
1Worldwide coronavirus cases passed 100 million Wednesday as countries struggle with new variants of the virus and a limited supply of vaccine. 2The worst-affected countries include the United States, India, Brazil and those in Europe. More than 2.1 million people have died from COVID-19, based on information from the Johns Hopkins University Coronavirus Center. 3At this time, the U.S. Centers for Disease Control and Prevention (CDC) says there is no evidence that new coronavirus variants cause more severe illness or increased risk of death. 4However, the CDC adds that scientists are still working to understand how easily the new forms might spread. They also want to find out whether they might cause more severe illness or whether currently approved vaccines will protect people against them. 5Three of the new coronavirus variants were found to have come from three countries: Britain, South Africa and Brazil. 6B.1.1.7 variant from Britain 7In Britain, a coronavirus variant known as B.1.1.7 was first recognized in September 2020. It quickly spread in southern Britain including London. It has since spread throughout Europe, the United States and Canada. 8Health organizations say this variant spreads more easily and quickly than others. But there is no evidence that it causes more severe illness or increased risk of death. 9South Africa's 501Y.V2 variant 10In South Africa, another variant called 501Y.V2 was found in early October. There have been cases caused by this variant in 20 countries including Australia and Canada, but not in the U.S. 11The variant is also known as B.1.351 and shares some genetic changes similar to the one in Britain. Scientists are concerned that antibodies from a small number of people who had recovered from COVID-19 or received a vaccine were less effective against this variant. 12P.1 variant from Brazil 13The P.1 coronavirus variant was first identified in four travelers from Brazil who were tested at Haneda airport outside Tokyo in January. The variant, however, could have been around much earlier in Brazil and has spread to many countries including Germany and South Korea. This week, the U.S. has also confirmed its first case of the variant in Minnesota. 14The CDC says early evidence shows that antibodies from a coronavirus infection or vaccine might not have the ability to recognize the P.1 variant. 15What causes the variants? 16Like other viruses, the CDC says SARS-CoV-2, the coronavirus that causes COVID-19, is always changing and has been changing all along. Sometimes new variants appear and disappear. Other times, new variants appear and spread across many countries. 17Daniel Rhoads is a microbiologist and pathologist with the Cleveland Clinic. He said, "Although this is concerning, it's not really surprising - we've been watching for this and more or less expecting it." 18Earlier in the pandemic, other variants including D614G and L452R appeared. However, the new variants are receiving attention now because they seem to spread more easily and quickly, which may lead to more cases of COVID-19. Another concern is whether approved vaccines like those from Pfizer and BioNTech or Moderna could be effective against them. 19Caitlin Rivers is an epidemiologist at the Johns Hopkins Center for Health Security. She told the Associated Press, "I'm worried that the variants might be throwing us a curveball." That means the variant could present an unexpected and difficult problem. 20The U.S. government's top infectious disease expert, Dr. Anthony Fauci, said scientists are studying vaccine measures to deal with the new variants. 21Moderna announced on Monday that it is testing an additional booster of its vaccine against the new variants. Pfizer, which makes a similar COVID-19 vaccine, said its study shows the shot to be effective against the variant in Britain, but questions remain about those found in South Africa and Brazil. 22American drug-maker Johnson and Johnson plans to report its vaccine study next week. The late-stage trials are being held in the United States, South Africa and Brazil. Scientists expect the results will show how well it works against the new variants. 23What can be done? 24The CDC says it is working with other public health agencies to monitor the situation closely and to look for new COVID-19 variants. It also has workers on the ground to study and investigate the new variants. 25The health agency advises that increasing public health measures such as vaccination, physical distancing, use of cloth coverings and hand washing will help limit the spread of the new variants. 26On Tuesday, the U.S. announced that it has banned travelers from Europe, Britain, Brazil, Ireland and South Africa. Other countries on the restricted list include China and Iran. 27In Europe, Belgium has banned all nonessential travel until March. And France may soon begin a third lockdown if its 12-hour daily curfew does not slow the spread of new infections. 28I'm Mario Ritter, Jr. And I'm Jonathan Evans. 29Hai Do wrote this report for VOA Learning English. Mario Ritter, Jr. was the editor. 30______________________________________________________________ 31Words in This Story 32variant -n. something that is different in some small ways from others of the same kind 33booster -n. an additional amount of medicine or vaccine that increases resistance to disease 34monitor -v. to watch or observe carefully over time for a special purpose 35We want to hear from you. Write to us in the Comments section, and visit our Facebook page.