Sir Peter Karel, Baron Piot (born 17 February 1949)[1] is a Belgian-British microbiologist known for his research into Ebola and AIDS.

He has held key positions in the United Nations and World Health Organization involving AIDS research and management.

The epidemic was already waning when the International Commission arrived, thanks to measures taken by local and national authorities, and it finally stopped in three months, after it had killed almost 300 people.

In 2012, Piot published a memoir entitled No Time to Lose which chronicles his professional work, including the discovery of the Ebolavirus; he mentions Muyembe in passing rather than as a co-discoverer.

In 2011, Amy Gutmann appointed him to serve on the International Research Panel at the Presidential Commission for the Study of Bioethical Issues.

[13] That year, he was appointed by Director General Margaret Chan to the World Health Organization's Advisory Group on the Ebola Virus Disease Response, co-chaired by Sam Zaramba and David L.

[14] He also chaired an independent panel convened by Harvard Global Health Institute and the London School of Hygiene & Tropical Medicine into the national and international response to the epidemic, which sharply criticised the response of the WHO and put forward ten recommendations for the body's reorganisation.

[16] In 2020, Piot was appointed to the European Commission’s advisory panel on COVID-19, co-chaired by Ursula von der Leyen and Stella Kyriakides.

[17] In the preparations for the Global Health Summit hosted by the European Commission and the G20 in May 2021, Piot co-chaired the event's High-Level Scientific Panel.