Thousands of young children lost parents to Covid. Where’s help for them? More than 46,000 children in the U.S. have lost a parent to Covid-19. Finding support for them remains a challenge. NBC News

Five months after her husband died of Covid-19, Valerie Villegas can see how grief has wounded her children.

Cuba says Abdala vaccine 92.28% effective against coronavirus

HAVANA, June 21 (Reuters) - Cuba said on Monday its three-shot Abdala vaccine against the coronavirus had proved 92.28% effective in last-stage clinical trials.

The announcement came just days after the government said another homegrown vaccine, Soberana 2, had proved 62% effective with just two of its three doses. ...

The announcement came from state-run biopharmaceutical corporation BioCubaFarma, which oversees Finlay, the maker of Soberana 2, and the Center for Genetic Engineering and Biotechnology, the producer of Abdala.

The dangerous Delta variant of the coronavirus is spreading so quickly in the United States that it's likely the mutant strain will become predominant in the U.S. within weeks, according to a new analysis.

The variant, first identified in India, is the most contagious yet and, among those not yet vaccinated, may trigger serious illness in more people than other variants do, say scientists tracking the spread of infection.

The Delta variant apparently already accounts for at least 14% of all new infections, according to the research analysis posted online Monday of more than 242,000 infections nationwide over the last six months.