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Health officials are investigating whether Ebola patients in Nigeria and Kenya may have crossed paths at Uganda’s main airport earlier this month, according to the BBC.
Both travelled through Entebbe airport on 3 October. Investigators are examining whether they could have been exposed through shared equipment or other contact, the Africa Centres for Disease Control and Prevention (Africa CDC) said on Thursday.
Dr Wessam Mankoula, the agency’s head of emergency preparedness and response, described contact at the airport as “one of the possible scenarios” but stressed that no link had been established.
Nigeria is dealing with its first Ebola case in more than a decade, while Kenya has confirmed nine infections, including one death.
Investigators trace patients’ travel
The Nigerian patient, a 42-year-old Ugandan-born woman who lives in Abuja, is being treated in isolation and is showing signs of improvement, according to the World Health Organization (WHO).
Switzerland’s foreign ministry confirmed to Reuters that the woman is married to a Swiss diplomat based in Nigeria. Her husband accompanied her on a trip to Uganda and is also in isolation, although he has not developed symptoms.
The woman returned to Nigeria on 3 October after spending about two and a half weeks in Uganda. She travelled through Addis Ababa, Ethiopia’s capital, where she had a two-hour stopover.
She developed symptoms four days after arriving in Abuja and sought treatment at two private health facilities before testing positive for Ebola on 20 October. Health officials are trying to establish where she contracted the virus and whether her movements overlapped with those of the Kenyan patient.
The Kenyan man travelled from the Democratic Republic of Congo through Uganda before arriving in Nairobi on 3 October. He later died, becoming Kenya’s first recorded Ebola death in the current outbreak.
Although both patients passed through Entebbe airport on the same day, officials have not established whether they met, used the same facilities or had other contact.
“One of the issues we are currently investigating has been some sort of interaction between the two cases at the airport,” Mankoula told journalists on Thursday. Investigators are also examining whether the infections could have a common source.
The WHO said it was too early to determine where the Nigerian woman became infected. “The source of exposure is still not known. The travel history of the patient is still being pieced together,” said Dr Patrick Otim, a WHO emergency response official.
Otim said investigators had struggled to obtain a complete account of the woman’s movements because opportunities to interview her were limited while she was in hospital.
Nigeria’s Centre for Disease Control and Prevention (NCDC) is carrying out genomic sequencing, which could help determine whether the infection is related to other cases. “The investigation is reconstructing the full travel and exposure history. Genomic sequencing is given a high priority,” said Dr Pavel Ursu, the WHO’s representative in Nigeria.
Officials expand contact tracing
Ugandan health officials previously said the woman had travelled to eastern DR Congo for business, where the current Ebola outbreak began. However, the WHO, Africa CDC and Nigeria’s health ministry said they had not received verified information confirming she had visited the country.
Uganda has said it has no confirmed active Ebola cases and that the woman’s travel through the country does not necessarily mean she contracted the virus there.
Africa CDC said Nigeria had identified additional people who may have been exposed to the woman, beyond the 44 contacts initially reported. “Most of those contacts, they are from the healthcare workers in different facilities where this case has been receiving treatment. We have also some few family members,” Mankoula told journalists on Thursday.
He said Nigerian authorities were working to identify and quarantine people considered at high risk, but declined to give an updated figure before the government released its findings. “The position of the country [is] to bring those high-risk contact and put them on quarantine,” he added.
Ursu said the woman was receiving a high standard of clinical care and that her condition was stable.
In Kenya, the first group of people quarantined after possible Ebola exposure will begin returning home on Sunday after completing 21 days of monitoring without developing symptoms.
Health Director-General Dr Patrick Amoth said all nine confirmed infections were linked to the first patient, with no evidence of wider community transmission. “We are not out of the woods,” he warned, urging the public to remain vigilant but not panic.
Amoth said the remaining eight patients were in isolation and responding well to treatment.
The developments have renewed concerns about infected people crossing international borders, particularly between the DR Congo and neighbouring Uganda, where thousands of people cross daily for trade, work and family visits.
Otim warned that the long, porous border between the two countries made screening everyone entering or leaving difficult, as many people used unofficial crossing points.
The WHO’s regional director for Africa, Dr Mohamed Janabi, called for “regional vigilance” and urged countries to strengthen surveillance, investigate infections and protect frontline health workers.
Ebola is a serious viral disease spread through direct contact with the blood or other bodily fluids of an infected person, or with contaminated objects. It does not spread through the air like flu.
The virus can cause fever, severe weakness, vomiting and diarrhoea, and can be fatal. People are not considered infectious before they develop symptoms.
Health authorities say quickly tracing contacts, isolating suspected cases and providing early treatment are crucial to preventing further transmission.
