Prime Minister Boris Johnson and his partner Carrie Symonds enter Downing Street as the Conservatives celebrate a sweeping election victory on December 13, 2019 in London, England.

British Prime Minister Boris Johnson and partner Carrie Symonds announced the birth of a baby boy.

Johnson's office says Symonds gave birth to a "healthy baby boy at a London hospital" on Wednesday morning, and both mother and baby are doing well.

Johnson, 55, and Symonds, 32, announced in February that they were expecting a child. At the time they said the baby was due in early summer.

Johnson returned to work Monday after suffering from coronavirus. He spent a week in a London hospital, including three nights in intensive care.

Symonds also said she was sick for a week with coronavirus symptoms.

Johnson has four children with his second wife, Marina Wheeler, from whom he is divorced, and has fathered at least one other child outside his marriages.

The wives of two of the last four British prime ministers, David Cameron and Tony Blair, had babies while their husbands were in office.