Nigeria, Feb. 21 -- A total of 1,831 deaths have now been recorded from COVID-19 in Nigeria after 18 more people died on Saturday, health authorities have said.

The 18 deaths on Saturday indicated a significant increase from the eight fatalities recorded on Friday.

Nigeria also reported 645 new infections on Saturday, increasing the total number of known cases in the country to 151,553.

This is according to an update by the Nigeria Centre for Disease Control (NCDC) Saturday night.

Low testing figures in many states has limited Nigeria's ability to determine the true extent of the spread of COVID-19.

A recent general fact sheet published by the NCDC showed that Kogi, Cross River and some other states were not conducting enough tests....