Key points from article :
Nigeria has been gripped by an outbreak of a Lassa fever.
Current outbreak is spreading faster and further than ever before.
Lassa fever is a viral haemorrhagic fever and is difficult to treat.
Currently no vaccine exists.
Most people who catch Lassa will have only mild symptoms.
But has a fatality rate of about one per cent.
People should wear protective gloves when caring Lassa fever patients.