Data suggest that the vaccines still offer hope in the face of the new variants.
In the U.S., cases have been drastically falling since mid-January when vaccinations picked up.
Deaths are gradually declining as well.
The Institute for Health Metrics and Evaluation at the University of Washington predicts another 152-thousand COVID-19 deaths in the U.S. by June 1st, but says the vaccines could reduce that by 75 percent.
The UK, where the world's first vaccinations began, is gearing up for a gradual easing of restrictions, believing that the effectiveness of its inoculations will be lasting.
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".there will at some point be a surge of cases and R is going to creep closer to one.and once you've got a large proportion of the population vaccinated our expectation is that will pull the natural R, that it can get to, well down."
Perhaps proof of that -- England has seen a drop of around 70 percent in cases among healthcare workers who've had their first dose of the Pfizer vaccine.
Also, in a recent study by Imperial College London, 14 percent -- or about one in seven people in the UK -- have COVID-19 antibodies.
They include vaccinated people, among whom 91 percent had antibodies after they'd had two doses of the Pfizer shot.
Israel is also set to reopen its economy by April, as average daily infections have fallen by more than 3-thousand over the last 3 weeks.
Israel has given 49 percent of its population at least one dose of the Pfizer vaccine -- the highest rate in the world.
Scientists have not proven a direct correlation between vaccination and infection rates in any of these countries.
However, the top infectious disease expert in the U.S., Dr. Anthony Fauci, has pointed to Israel as an example of what can happen, in his words, "when you effectively vaccinate a substantial proportion of the people."
Lee Kyung-eun, Arirang News.