CNN News:美国疫苗接种人数已超累计确诊人数

CARL AZUZ, cnn 10 ANCHOR: Different kinds of drugs and treatments are helping in the international fight against coronavirus and that's where we start this Wednesday's show. I'm Carl Azuz, happy to have you watching. Worldwide, there've been more than 117 million positive COVID tests since the pandemic began last year.
That's according to Johns Hopkins University. It says more than 2.6 million deaths have been associated with the disease, over 526,000 of them have been in the United States, the hardest hit country. The overall survival rate for coronavirus is estimated to be about 99.5 percent. That's when averaged across all ages and includes estimates of people who catch it but have no symptoms.
There's been progress in the search for effective medicines. Antiviral drugs, antibody treatments and a 40-year-old anti-depressant are all showing promise in their testing phases of stopping or reducing the virus' effects. When it comes to vaccines, there are now three of them available in the United States.

Johnson & Johnson has joined Pfizer and Moderna in getting emergency use approval for its vaccine. Emergency use means a drug can be given out during an emergency even though it hasn't been fully evaluated for safety and effectiveness.
The Centers for Disease Control says more than 31 million Americans have been fully vaccinated against coronavirus. That's more than the total number of positive COVID tests the U.S. has recorded.
Medical researchers say the vaccines help protect people against catching COVID-19 and that there's growing evidence they help prevent the spread of COVID-19. What's unknown is how long the vaccine's protection from the virus will last and if they're effective against new mutations, new versions of coronavirus.
Many Americans have followed Federal, state and local guidelines when it comes to COVID restrictions. Many haven't and carried on with life as usual.