The World Health Organization said Friday it is reviewing recent reports of blood clots in some people who received the AstraZeneca Covid-19 vaccine that has prompted a few countries to halt their rollout of the shots.

At least nine countries, including Denmark, Norway, Iceland and Thailand, have suspended their use of the vaccine over safety concerns. As of Wednesday, around 5 million people in Europe had received the Oxford-AstraZeneca vaccine. Of this figure, 30 so-called thromboembolic events have been reported in recipients. Those are blood clots that form in blood vessels and block blood flow.

AstraZeneca said in a statement Friday that there's "no evidence" that the vaccine causes an increased risk of developing blood clots.

More in category

Tobacco stocks drop on report Biden administration is planning to cut nicotine levels in cigarettes
April 19, 2021CNBC
Tobacco stocks drop on report Biden administration is planning to cut nicotine levels in cigarettes
United lost more than $1.3 billion to start the year, and the stock is falling
April 19, 2021MarketWatch
United lost more than $1.3 billion to start the year, and the stock is falling
‘We’re still blazing the trail’: Joe Biden wants to create millions of infrastructure jobs — but will his plan help women rejoin the workforce?
April 18, 2021MarketWatch
‘We’re still blazing the trail’: Joe Biden wants to create millions of infrastructure jobs — but will his plan help women rejoin the workforce?
Coinbase CEO Brian Armstrong raised more than $290 million with share sales, and Fred Ehrsam raised nearly $112 million
April 19, 2021MarketWatch
Coinbase CEO Brian Armstrong raised more than $290 million with share sales, and Fred Ehrsam raised nearly $112 million
Opinion: What does a strong reaction to a COVID-19 vaccine mean?
April 19, 2021MarketWatch
Opinion: What does a strong reaction to a COVID-19 vaccine mean?
Earth Day contest winners create concrete that can trap carbon dioxide — next up is Musk’s $100 million prize
April 19, 2021MarketWatch
Earth Day contest winners create concrete that can trap carbon dioxide — next up is Musk’s $100 million prize
Young, healthy adults will be deliberately reinfected with COVID-19 to boost vaccine development
April 19, 2021MarketWatch
Young, healthy adults will be deliberately reinfected with COVID-19 to boost vaccine development
What we know about COVID vaccine side effects in women
April 18, 2021MarketWatch
What we know about COVID vaccine side effects in women
The pandemic may have permanently altered Apple’s path
April 16, 2021MarketWatch
The pandemic may have permanently altered Apple’s path
These stocks are ‘cash cows’ that give you a better way to play the value sector
April 16, 2021MarketWatch
These stocks are ‘cash cows’ that give you a better way to play the value sector
Opinion: Tech’s COVID-19 boom won’t last forever, but it’s not going to end just yet
April 16, 2021MarketWatch
Opinion: Tech’s COVID-19 boom won’t last forever, but it’s not going to end just yet
Why Brookfield Renewable Partners Stock Dropped Monday
April 19, 2021The Motley Fool
Why Brookfield Renewable Partners Stock Dropped Monday
Biden WH weighing nicotine reduction in all cigarettes: report
April 19, 2021FOX Business
Biden WH weighing nicotine reduction in all cigarettes: report
Biden says he is 'prepared to compromise' on $2.25T spending plan
April 19, 2021FOX Business
Biden says he is 'prepared to compromise' on $2.25T spending plan
Bitcoin’s nosedive: What happened and what’s ahead?
April 19, 2021FOX Business
Bitcoin’s nosedive: What happened and what’s ahead?
United reports fifth consecutive quarterly loss
April 19, 2021CNBC
United reports fifth consecutive quarterly loss
Biden prepping taxes on wealthy Americans as part of next spending bill
April 19, 2021FOX Business
Biden prepping taxes on wealthy Americans as part of next spending bill
IBM reports earnings on Monday — here’s what to expect
April 16, 2021MarketWatch
IBM reports earnings on Monday — here’s what to expect
MLB seeing record-high streaming viewership despite All-Star Game backlash
April 19, 2021CNBC
MLB seeing record-high streaming viewership despite All-Star Game backlash
Opinion: 5 things this index pioneer wants you to know about today’s investing challenges
April 15, 2021MarketWatch
Opinion: 5 things this index pioneer wants you to know about today’s investing challenges
Why Aphria, OrganiGram Holdings, and Aurora Cannabis Rose Today
April 19, 2021The Motley Fool
Why Aphria, OrganiGram Holdings, and Aurora Cannabis Rose Today