Some nurses are turning up for work at hospitals in Liberia despite calls for a strike to demand better hazard pay amid an Ebola epidemic. A strike could severely hamper Liberia's ability to respond to the largest ever Ebola outbreak.

The disease is believed to have killed more than 4,000 people in West Africa. Liberia has the highest death toll.

Ebola has hit health care workers especially hard, infecting about 400, nearly half of those in Liberia. Members of the National Health Workers Association are demanding higher monthly hazard pay.

Gobee Logan, a doctor at a government hospital, said that some nurses were at work Monday.

The association boasts more than 10,000 members, though the health ministry says only about 1,000 of those are employed at sites receiving Ebola patients.