It’s both. From Justus R. Hope at thedesertreview.com:
Virologists at the Wuhan Institute of Virology – A Level 4 Biosafety Laboratory
The World Health Organization stood ready to declare smallpox eradicated following the last known case in 1977 in Somalia. However, another human being contracted the dreaded disease in Birmingham, England, an industrial community 100 miles outside of London.
Janet Parker, 40, a medical photographer who worked in the anatomy department at Birmingham Medical School, began showing symptoms on Friday, August 11, 1978. Her case would ignite a fierce controversy about whether variola, the scientific name for the smallpox virus, had escaped a medical laboratory.
Parker’s condition progressed relentlessly, leaving her almost blind in both eyes, with pneumonia and renal failure. She died on September 11, 1978.
But how did Janet get exposed? Professor Henry Bedson directed the smallpox laboratory at the medical school where Janet Parker was employed. It was one of only a few worldwide that conducted WHO-related smallpox research. Professor Bedson was a virologist who headed the Microbiology Department at the University of Birmingham, and his area of specialty was poxviruses.