Rows of blue-shuttered market stalls remain bolted behind streams of police tape. On one side of the street, a queue of market workers line up for inspection by health personnel. On the other, under a sign that reads “Huanan Seafood Market,” figures clad in white hazmat suits carry bundles of evidence into a small camouflage tent. It’s been six weeks since a mysterious pneumonia-like virus was first discovered in China’s central city of Wuhan, and the investigation continued Wednesday at the market deemed the source of the outbreak.