John Lukunku, the Brasimba factory director, walks with a member of the press at the Brasimba beer production factory, a subsidiary of the Castel group, in Beni, Democratic Republic of Congo, December 21, 2022. REUTERS/Erikas Mwisi Kambale 

John Lukunku, the Brasimba factory director, gestures inside the Brasimba beer production factory, a subsidiary of the Castel group, in Beni, Democratic Republic of Congo, on December 21, 2022. REUTERS/Erikas Mwisi Kambale 

A general view shows crates of beer arranged at the Brasimba beer production factory, a subsidiary of the Castel group, in Beni, Democratic Republic of Congo, December 21, 2022. REUTERS/Erikas Mwisi Kambale 

John Lukunku, the Brasimba factory director, walks past a fermentation tank at the Brasimba beer production factory, a subsidiary of the Castel group, in Beni, Democratic Republic of Congo, December 21, 2022. REUTERS/Erikas Mwisi Kambale 

A general view shows brewing equipment at the Brasimba beer production factory, a subsidiary of the Castel group, in Beni, Democratic Republic of Congo, December 21, 2022. REUTERS/Erikas Mwisi Kambale 

A general view shows the beer storage warehouse at the Brasimba beer production factory, a subsidiary of the Castel group, in Beni, Democratic Republic of Congo, December 21, 2022. REUTERS/Erikas Mwisi Kambale 

Uganda Health Minister Jane Ruth Aceng address the media after receiving a shipment of 1,200 doses for Ebola vaccine candidates, set to be used in a clinical trial, at the National Medical Stores (NMS) in Entebbe, Uganda, December 8, 2022. REUTERS/Abubaker Lubowa 

Uganda Health Minister Jane Ruth Aceng address the media after receiving a shipment of 1,200 doses for Ebola vaccine candidates set to be used in a clinical trial at the National Medical Stores (NMS) in Entebbe, Uganda, December 8, 2022. REUTERS/Abubaker Lubowa 

Uganda Health Minister Jane Ruth Aceng address the media after receiving a shipment of 1,200 doses for Ebola vaccine candidates, set to be used in a clinical trial, at the National Medical Stores (NMS) in Entebbe, Uganda, December 8, 2022. REUTERS/Abubaker Lubowa 

A consignment of 1,200 doses for Ebola vaccine candidates set to be used in a clinical trial is placed on a pallet at the National Medical Stores (NMS) in Entebbe, Uganda, December 8, 2022. REUTERS/Abubaker Lubowa 

Motorists and cyclists are seen at a traffic light intersection in Kabuusu area of the Lubaga division amid the Ebola outbreak in Kampala, Uganda November 16, 2022. REUTERS/Abubaker Lubowa 

A general view shows a sign post of Kitebi Health Centre 3 in the Lubaga division amid the Ebola outbreak in Kampala, Uganda November 16, 2022. REUTERS/Abubaker Lubowa 

Cyclists and pedestrians are seen at a main street in Kabuusu area of the Lubaga division amid the Ebola outbreak in Kampala, Uganda November 16, 2022. REUTERS/Abubaker Lubowa 

A general view shows a street in Kabuusu area of the Lubaga division amid the Ebola outbreak in Kampala, Uganda November 16, 2022. REUTERS/Abubaker Lubowa 

An anti-Ebola advocacy van drives along Kyadondo road amid the Ebola outbreak and alert in Kampala, Uganda October 27, 2022. REUTERS/Abubaker Lubowa 

Alone Nahabwe, Secretary in charge of Welfare at Uganda Medical Association (UMA), speaks during a Reuters interview on the effective fight against the Ebola outbreak in Kampala, Uganda October 26, 2022. REUTERS/Abubaker Lubowa 

Alone Nahabwe, Secretary in charge of Welfare at Uganda Medical Association (UMA), speaks during a Reuters interview on the effective fight against the Ebola outbreak in Kampala, Uganda October 26, 2022. REUTERS/Abubaker Lubowa 

Samuel Oledo, President of Uganda Medical Association (UMA), speaks during a Reuters interview on the effective fight against the Ebola outbreak in Kampala, Uganda October 26, 2022. REUTERS/Abubaker Lubowa 

Uganda Minister of Health Jane Ruth Aceng speaks during a news conference on the rising Ebola cases, in Kampala, Uganda, October 26, 2022. REUTERS/Abubaker Lubowa 

Uganda Minister of Health Jane Ruth Aceng speaks during a news conference on the rising Ebola cases, in Kampala, Uganda, October 26, 2022. REUTERS/Abubaker Lubowa 

Gaya Gamhewage, World Health Organisation's director of prevention and response to sexual exploitation, abuse and harassment, gestures during an interview with Reuters in Geneva, Switzerland October 26, 2021. Picture taken October 26, 2021. REUTERS/Cecile Mantovani 

Gaya Gamhewage, World Health Organisation's director of prevention and response to sexual exploitation, abuse and harassment, is seen on a TV camera display during an interview with Reuters in Geneva, Switzerland October 26, 2021. Picture taken October 26, 2021. REUTERS/Cecile Mantovani 

Gaya Gamhewage, World Health Organisation's director of prevention and response to sexual exploitation, abuse and harassment, gestures during an interview with Reuters in Geneva, Switzerland October 26, 2021. Picture taken October 26, 2021. REUTERS/Cecile Mantovani 

A resident receives a vaccine as the vaccinations against Ebola continue in Alakro, the slum where the first case of Ebola was confirmed, in Abidjan, Ivory Coast August 17, 2021. REUTERS/Luc Gnago 

A health worker prepares to vaccinate a resident as the vaccinations against Ebola continue in Alakro, the slum where the first case of Ebola was confirmed, in Abidjan, Ivory Coast August 17, 2021. REUTERS/Luc Gnago 

A resident receives a vaccine as the vaccinations against Ebola continue in Alakro, the slum where the first case of Ebola was confirmed, in Abidjan, Ivory Coast August 17, 2021. REUTERS/Luc Gnago 

A health worker prepares to vaccinate a resident as the vaccinations against Ebola continue in Alakro, the slum where the first case of Ebola was confirmed, in Abidjan, Ivory Coast August 17, 2021. REUTERS/Luc Gnago 

A health worker prepares to vaccinate a resident as the vaccinations against Ebola continue in Alakro, the slum where the first case of Ebola was confirmed, in Abidjan, Ivory Coast August 17, 2021. REUTERS/Luc Gnago 

A health worker prepares to vaccinate a resident as the vaccinations against Ebola continue in Alakro, the slum where the first case of Ebola was confirmed, in Abidjan, Ivory Coast August 17, 2021. REUTERS/Luc Gnago 

A health worker receives a vaccine against Ebola at a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker receives a vaccine against Ebola at a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker receives a vaccine against Ebola at a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker receives a vaccine against Ebola at a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

Health workers, wearing protective suits and face masks, sit in a van as they prepare to disinfect the rooms and hallways of a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker, wearing protective suit and face mask, walks as he prepares to disinfect a hallway of a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker, wearing protective suit and face mask, disinfects a room of a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker, wearing protective suit and face mask, disinfects a hallway of a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

A health worker, wearing protective suit and face mask, disinfects a room of a hospital after a case of Ebola was confirmed in Abidjan, Ivory Coast August 16, 2021. REUTERS/Luc Gnago 

U.N. Secretary-General's Special Envoy for Ebola David Nabarro addresses the media on World Health Organization (WHO)'s health emergency preparedness and response capacities in Geneva, Switzerland, July 31, 2015. REUTERS/Pierre Albouy 

Ebola victim of Goma, Esperance Nyabintu bathes her son Ebenezer Fataki, at her compound within Bugamba locality in Goma, eastern Democratic Republic of Congo August 27, 2020. Picture taken August 27, 2020. REUTERS/Djaffar Al Katany 

Ebola survivor Esperance Nyabintu talks to Adolphine Mauwa, an Ebola orphan from Beni, at her uncle's quarters within Kyeshero in Goma, eastern Democratic Republic of Congo August 27, 2020. Picture taken August 27, 2020. REUTERS/Djaffar Al Katany 

Esperance Nyabintu and her son Ebenezer Fataki, the only two Ebola survivors of Goma, talk to their neighbours at their compound within Bugamba locality in Goma, eastern Democratic Republic of Congo August 27, 2020. Picture taken August 27, 2020. REUTERS/Djaffar Al Katany 

Espérance Nyabintu, an Ebola survivor of Goma talks to a neighbour at her compound within Bugamba locality in Goma, eastern Democratic Republic of Congo August 27, 2020. Picture taken August 27, 2020. REUTERS/Djaffar Al Katany 

A volunteer of Goma Actif sensitizes the population on the advocacy measures to prevent against the spread of the coronavirus disease (COVID-19) within Ndosho quarters in Goma, eastern Democratic Republic of Congo August 29, 2020. REUTERS/Djaffar Al Katany 

EspŽrance Nyabintu, an Ebola survivor is seen at her compound within Bugamba locality in Goma, eastern Democratic Republic of Congo August 27, 2020. Picture taken August 27, 2020. REUTERS/Djaffar Al Katany 

Volunteers of Goma Actif gather to sensitize the population on the advocacy measures to prevent against the spread of coronavirus disease (COVID-19) within Ndosho quarters in Goma, eastern Democratic Republic of Congo August 29, 2020. REUTERS/Djaffar Al Katany 

Two ampules of Ebola drug Remdesivir are pictured during a news conference at the University Hospital Eppendorf (UKE) in Hamburg, Germany, April 8, 2020, as the spread of coronavirus disease (COVID-19) continues. Ulrich Perrey/Pool via REUTERS 

University Hospital Eppendorf (UKE) head of infectiology Marylyn Addo attends a news conference on the start of a study with the Ebola drug Remdesivir with particularly severely ill patients at the UKE in Hamburg, Germany, April 8, 2020, as the spread of coronavirus disease (COVID-19) continues. Ulrich Perrey/Pool via REUTERS 

Two ampules of Ebola drug Remdesivir are pictured during a news conference at the University Hospital Eppendorf (UKE) in Hamburg, Germany, April 8, 2020, as the spread of coronavirus disease (COVID-19) continues. Ulrich Perrey/Pool via REUTERS 

University Hospital Eppendorf (UKE) head of infectiology Marylyn Addo attends a news conference on the start of a study with the Ebola drug Remdesivir with particularly severely ill patients at the UKE in Hamburg, Germany, April 8, 2020, as the spread of coronavirus disease (COVID-19) continues. Ulrich Perrey/Pool via REUTERS 

University Hospital Eppendorf (UKE) head of infectiology Marylyn Addo attends a news conference on the start of a study with the Ebola drug Remdesivir with particularly severely ill patients at the UKE in Hamburg, Germany, April 8, 2020, as the spread of coronavirus disease (COVID-19) continues. Ulrich Perrey/Pool via REUTERS 

University Hospital Eppendorf (UKE) head of infectiology Marylyn Addo attends a news conference on the start of a study with the Ebola drug Remdesivir with particularly severely ill patients at the UKE in Hamburg, Germany, April 8, 2020, as the spread of coronavirus disease (COVID-19) continues. Ulrich Perrey/Pool via REUTERS 

An Ebola kit with protective gear is seen in the back of a REACT EMS vehicle in Shawnee, Oklahoma, U.S. March 26, 2020. REUTERS/Nick Oxford 

A Congolese Medecins Sans Frontieres (MSF) health worker is seen as they prepare the introduction of the second ebola vaccine produced by Johnson & Johnson, in Majengo neighborhood of Goma, Democratic Republic of Congo, November 14, 2019. REUTERS/Fiston Mahamba 

Congolese residents gather around Medecins Sans Frontieres (MSF) health workers as they prepare the introduction of the second ebola vaccine produced by Johnson & Johnson, in Majengo neighborhood of Goma, Democratic Republic of Congo, November 14, 2019. REUTERS/Fiston Mahamba 

Congolese residents gather around Medecins Sans Frontieres (MSF) health workers as they prepare the introduction of the second ebola vaccine produced by Johnson & Johnson, in Majengo neighborhood of Goma, Democratic Republic of Congo, November 14, 2019. REUTERS/Fiston Mahamba 

Thermometers are pictured at the entrance of an Ebola Treatment Centre in the Eastern Congolese town of Butembo in the Democratic Republic of Congo, October 4, 2019. REUTERS/Zohra Bensemra 

Moise Vaghemi, an Ebola survivor who works as a nurse, waits to receive tubes for taking blood samples at the Ebola treatment centre in Katwa, near Butembo, in the Democratic Republic of Congo, October 3, 2019. REUTERS/Zohra Bensemra 

Moise Vaghemi, 33, (C) an Ebola survivor who works as a nurse, cares for a patient who is suspected to be suffering from Ebola, inside the Biosecure Emergency Care Unit (CUBE) at the Ebola treatment centre in Katwa, near Butembo, in the Democratic Republic of Congo, October 3, 2019. REUTERS/Zohra Bensemra 

People walk past the Ebola treatment centre in Katwa, near Butembo, in the Democratic Republic of Congo, October 5, 2019. REUTERS/Zohra Bensemra