The Nigeria Centre for Disease Control (NCDC) has said it cannot explain how 223 of the confirmed 873 cases became infected with the virus in the country, describing them as cases of unknown origin.
The agency revealed the figures in its latest COVID-19 Situation report released on Thursday.
Previously, the number of cases classified as ‘unknown origin’ was 203.
According to the report covering 26 states, cases with travel history totalled 210, while cases with contacts were 317.
There was ‘incomplete’ information on 123 cases.
The NCDC disclosed more males have contracted the virus than females as 617 men have so far been diagnosed with the virus.
This represents 70 per cent of the total and contrasts with 257 women affected, representing 30 per cent.
The agency disclosed that it has special interest in 9,257 people.
What should get Nigerians worried is that despite the two-week lockdown, only 9,522 tests have so far been done, with 588 done on Wednesday.
