Antonia Kinlay lost her role in a BBC TV adaptation of one of JK Rowling's crime novels.
The fall is based on data gathered before changes to the app which mean it will notify fewer contacts.
Johnson, who had a 1999 hit with Get Get Down, had been in intensive care with the virus.
The news comes as Facebook's WhatsApp starts to roll out a disappearing photos and videos feature.
Older people watched more linear TV while on-demand is big hit with younger audience.
Taylor Swift, Lana Del Rey and Lorde all rely on his advice. Now he's making a statement of his own.
Aisha Jawando takes over from Adrienne Warren in the title role in the musical Tina.
Ugo Monye will join Olympic swimmer Adam Peaty and 13 other stars when the show returns next month.
More than 4,000 viewers complained that events were misleading and caused unnecessary distress.
Brigitte's parents just wanted to keep her busy. Now, she's been invited to play at Carnegie Hall.