The death toll from the ongoing Lassa fever outbreak in Nigeria has climbed to 138 since the beginning of the year, according to public health authorities.

The death toll of the Lassa fever outbreak in Nigeria has risen to 127, public health authorities said Tuesday.

At least 13 people have died from a Lassa fever outbreak in Edo state, southern Nigeria, according to local authorities.

A resident of the US State of Iowa has died after contracting Lassa fever, state officials have announced.