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A health worker monitors visitors arriving at the Rodolphe Mérieux Laboratory at the National Biomedical Research Institute in Goma, Democratic Republic of Congo, on May 19.
Jospin Mwisha/AFP/Getty Images
A health worker monitors visitors arriving at the Rodolphe Mérieux Laboratory at the National Biomedical Research Institute in Goma, Democratic Republic of Congo, on May 19.
Jospin Mwisha/AFP/Getty Images