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How has the COVID-19 pandemic changed after two years?
More countries are shifting toward a return to normal and learning to live with the virus. Safe, effective vaccines have been developed and there's better understanding of how to treat people sickened by the virus.
REPUBLICANS DEMAND TSA ALLOW COVID MASK MANDATE TO EXPIRE
Two years after the pandemic began, questions remain about the coronavirus. But experts know a lot more about how to keep it under control.
The virus mainly spreads through the air when an infected person exhales, talks, coughs or sneezes. It's why health officials have encouraged the use of masks and ventilating spaces, instead of focusing on advice to wipe down surfaces as they did early on.
FILE — Registered nurse Bryan Hofilena attaches a "COVID Patient" sticker on a body bag of a patient who died of coronavirus at Providence Holy Cross Medical Center in Los Angeles, Tuesday, Dec. 14, 2021. (AP Photo/Jae C. Hong, File)
Treatment has also evolved for people who get sick or need to be hospitalized. Among the options are antivirals, such as the drug remdesivir, or newer pills from Pfizer and Merck; anti-inflammatory drugs including steroids; and depending on what variant is circulating, lab-made antibodies to attack the virus.
HAWAII BECOMES LAST STATE TO LIFT MASK MANDATE, IDAHO ENDS COVID-19 DISASTER DECLARATION
"The world has watched us learn in real-time how to treat COVID-19," says Neil J. Sehgal, an assistant professor of health policy and management at the University of Maryland School of Public Health.
COVID-19 vaccines were also developed in record time. As of early March, 10 vaccines have been cleared for emergency use by the World Health Organization.
Still, distribution of vaccines has been unequal despite an international effort to deliver shots more fairly and misinformation has fueled hesitancy about the shots.
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And there’s still much left to learn. Studies are underway to better understand long COVID-19, which can persist for months after an initial infection. And scientists are on the lookout for the next fast-spreading variant.
"Eventually every country will have to learn to live with COVID," says Sehgal.