The US president said he plans to call Vladimir Putin later in the day and noted it is Putin’s birthday Shipilova died on Friday, prompting a flurry of speculation that her illness was related to her work at the nearby Anti-Plague Research Institute. Key points and original sources are listed below.

• The US president said he plans to call Vladimir Putin later in the day and noted it is Putin’s birthdayS1

• Shipilova died on Friday, prompting a flurry of speculation that her illness was related to her work at the nearby Anti-Plague Research Institute.S2