Cuba Begins Administering COVID Vaccines To Children As Young As 2

Cuba is the only country currently vaccinating young children with a COVID vaccine developed locally. Trials indicate the vaccine is effective, but the data has not yet been published in a peer-reviewed journal. In the US, officials anticipate that a vaccine for children under 12 could be approved by the end of the year.

What is the significance of the COVID vaccine trials mentioned in the text?

What is the current publication status of the data regarding the COVID vaccine in Cuba?