A six-week-old baby has become the world's youngest person to die with the coronavirus.
The newborn, from Connecticut in the United States, was taken to hospital last week after becoming unresponsive, but was unable to be revived.
Testing carried out on the child confirmed it had been infected with COVID-19, Connecticut Governor Ned Lamont said.
In a series of posts on Twitter, he described the situation as "absolutely heartbreaking".
"This is a virus that attacks our most fragile without mercy. This also stresses the importance of staying home and limiting exposure to other people," he wrote.
"Your life and the lives of others could literally depend on it. Our prayers are with the family at this difficult time."
Connecticut health officials say it's unclear whether the baby had any underlying health issues, such as a respiratory condition.
The newborn is one of 5100 deaths from coronavirus so far in the US, John Hopkins University revealed. On Thursday (NZ time), the US suffered 884 deaths in 24 hours - a new worldwide record.
The COVID-19 pandemic has infected more than 936,000 people across the globe. It is also linked to 47,000 deaths.