At the St Joseph Covid-19 Treatment Centre in Kinshasa, patients lie in ramshackle rooms breathing oxygen from old tanks. The clinic has 38 beds, and all but one are occupied.

In a backyard littered with medical equipment, tents are needed to cope with the overflow.

Democratic Republic of Congo is the least vaccinated country against Covid-19 in the world. Now a fourth wave of the coronavirus threatens to put greater pressure on its rickety health system than at any time during the pandemic.

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