The Guardian | Patrick Wintour: Nazanin Zaghari-Ratcliffe�s health is improving after fears last week that she had contracted coronavirus while in prison in Tehran.

However, her family have said she has not been tested and a promise of temporary release made last week by prison officers has not materialised, causing her deep distress.

Many prisoners in Iran are being released temporarily amid fears that the disease will spread rapidly inside prisons if it takes a grip, but the offer of release applies only to prisoners with sentences of less than five years. Most political prisoners are serving longer sentences.

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