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Nigeria, population 200 million, was spared the worst in its first Covid-19 wave that began in February last year. But a second wave has hit hard.
More than half of Nigeria's 131 242 confirmed cases have been logged in the past three months.
Authorities pledged in January to build a new oxygen plant in each of Nigeria's 36 states.
The Lagos businesswoman recalled the "horrendous" week she spent in the Covid-19 wing of a city public hospital, where the sense of crisis was lifted only briefly by whoops of joy when a patient secured one of the few available tanks of oxygen.