Ebola outbreak on track to be deadliest ever, WHO chief says

What we know

The outbreak, declared on 15 May, has caused more than 2,000 deaths, with thousands more reported cases

Why this counts

What makes this worth tracking, according to BBC, is the chain of decisions it may trigger.

What precedes this

Looking back, BBC and others have reported on the conditions that made ebola outbreak on track to be deadliest ever, who chief says possible.

Where this fits in Signal Ledger

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The lens

Signal Ledger reads this through the lens of ebola, outbreak, track, deadliest, ever: The outbreak, declared on 15 May, has caused more than 2,000 deaths, with thousands more reported cases.