Covid-19 vaccinations are on the rise in the US, but in a number of states like Michigan, case counts are spiking as well. CNN's Miguel Marquez has more.

Covid-19 vaccinations are on the rise in the US, but in a number of states like Michigan, case counts are spiking as well. CNN's Miguel Marquez has more.

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All 50 states now have expanded or will expand Covid vaccine eligibility to everyone 16 and up

All states nationwide have announced when they plan to open up coronavirus vaccinations to everyone eligible under FDA emergency use authorizations -- if they haven't done so already.

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As Covid-19 cases are rising across the country, health experts are still divided over whether the US will see a true fourth wave of infections. CNN's Alexandra Field reports.

As Covid-19 cases are rising across the country, health experts are still divided over whether the US will see a true fourth wave of infections. CNN's Alexandra Field reports.

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"Staggering" number of children have lost at least one parent to Covid-19, model estimates

More than a year into the pandemic, children's lives may be starting to look more normal as an increasing number of people get vaccinated and schools reopen. However, many children in the US are contending with the difficult reality that is irreparable: the loss of a parent from Covid-19. One result of the pandemic may be an ever-growing number of "Covid...

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Illinois bar opening event linked to 46 Covid-19 cases, a school closure and hospitalization, CDC report says

A rural Illinois bar opening event in February was linked to a Covid-19 outbreak of at least 46 cases, a school closure and the hospitalization of a long-term care facility resident, according to a United States Centers for Disease Control and Prevention report.

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Some Covid-19 long haulers say vaccines may be relieving their symptoms. Researchers are looking into it

Jessamyn Smyth hopes that two shots in the arm may be what finally delivers her from a year in which the lasting effects of Covid-19 wreaked chaos in her life.

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Pfizer/BioNTech says its Covid-19 vaccine is 100% effective and well tolerated in adolescents

Clinical trial results of Pfizer/BioNTech's Covid-19 vaccine showed its efficacy is 100% and it is well tolerated in youths ages 12 to 15, the companies said Wednesday.

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Fully vaccinated people can travel at low risk to themselves, new CDC guidance says

The US Centers for Disease Control and Prevention on Friday released highly anticipated updated travel guidance for people who are fully vaccinated against Covid-19, eliminating some testing and quarantine recommendations.

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Manufacturing moonshot: How Pfizer makes its millions of Covid-19 vaccine doses

When the coronavirus pandemic began, the challenge for Pfizer and BioNTech wasn't just developing a Covid-19 vaccine -- they also had to make it, and by the hundreds of millions.

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Covid-19 was third leading cause of death last year, CDC confirms in early data

Covid-19 was the third leading cause of death in the United States last year, after heart disease and cancer, according to provisional data released on Wednesday by the US Centers for Disease Control and Prevention.

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