The CDC has acknowledged the effectiveness of the vaccines in preventing both infections and disease in their mitigation recommendations.

By the end of April, it is likely that we will have between 200 and 250 million people with significant immunity.

We have not seen the predicted 4th wave in March, what we have seen is a flattening of what had been a steep decline in the number of cases.

In the United States, COVID-19 case rates continue to decrease although not as deeply as in recent previous weeks.

It appears that the pace of vaccination and the movement towards herd immunity has blunted the effect of more virulent variants.

The most important news on vaccines is the approval and release of the Johnson & Johnson single-dose vaccine for COVID-19.

In the past week, cases in the United States have declined by 20% and are now down to levels not seen since mid-October.

In the United States, about 12% of the population have had at least one dose of the Pfizer-BioNTech or the Moderna Vaccines.

In the United States, the overall rate of new COVID-19 infections decreased by nearly 1/4 in the last week.