The Nigeria Centre for Disease Control has confirmed 358 cases of Lassa fever recorded across 19 States, with at least one confirmed case across 65 Local Government Areas in Nigeria.
It also said that the fever caused three deaths in Britain, diagnosed from those who recently came back from West Africa.
The NCDC, via its verified website, disclosed this known on Wednesday, saying that in week six, the number of new confirmed cases of Lassa fever increased from 58 in week five, 2022, to 77 cases.
According to reports, Lassa fever has caused three deaths in Britain.
The UK Health Security Agency, in a statement on February 11, confirmed the number of deaths.
It said the three cases were within the same family in the East of England and were linked to recent travel to West Africa.
Prior to these three cases, there have been eight cases of Lassa fever imported to the UK since 1980.
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The last two cases occurred in 2009. There was no evidence of onward transmission from any of these cases.
Nigeria and some parts of Africa have continued to see recent outbreaks of Lassa fever, making a pandemic-wary world even more jittery, as there is currently no vaccine that protects against Lassa fever.
NCDC noted that the additional cases in week six were reported from Ondo, Edo, Bauchi, Ebonyi, Taraba, Enugu, Benue, Kogi, Nasarawa, Niger and the Federal Capital Territory.
It stated that cumulatively from week one to week six, 2022, 59 deaths had been registered with a case fatality rate (CFR) of 16.5 per cent in the country.
It, however, noted that the 16.5 per cent CFR was lower than the CFR for the same period in 2021, which was 22.9 per cent.
“In total for 2022, 19 states have recorded at least one confirmed case across 65 Local Government Areas.
“Of all confirmed cases, 73 per cent are from Ondo; 32 per cent from Edo; and Bauchi 18 per cent.
“The predominant age-group affected is 12-30 years: (Range: 1 to 80 years, Median Age: 30 years). The male to female ratio confirmed cases are 1: 0.8. The number of suspected cases has increased compared to the 2021 figure,” it explained.
The NCDC also disclosed that seven new health workers were affected, adding that they were from Bauchi, Ondo and Edo states in week six.
The health institute noted that it is currently distributing medical response commodities to states and treatment Centres.
The NCDC stated that people can become infected by Lassa fever if they come in contact with food items that have been contaminated with the urine or feces of an infected rat.
It, however, added that human-to-human transmission is rare but can occur through contact with the body fluids of an infected person.
“Symptoms typically appear between one and three weeks after exposure to the virus. In mild cases, the disease causes fever, fatigue, weakness and headache.
“More severe symptoms include bleeding, difficulty in breathing, vomiting, facial swelling, pain in the chest, back and abdomen and shock,” it added.
The NCDC said that supportive care, including rehydration and symptomatic treatment, can improve the chances of survival.
The agency advised Nigerians to avoid any contact with rats to prevent getting infected. Storing food in rat-proof containers and using rat traps are also advised.
NAN recalls that the disease was first discovered in 1969 in Nigeria and is named after the town where the first cases were reported.
It is known to be endemic in Nigeria, along with its neighboring countries, Benin, Ghana, Guinea, Liberia, Mali, and Sierra Leone.
Lassa fever is an animal-borne acute viral illness, belonging to the virus family Arena, according to the World Health Organization (WHO).
Between 1,00,000 and 3,00,000 infections of Lassa fever occur annually, leading to an estimated 5,000 deaths, as per data published on the website of the United States CDC.
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