Nigeria records 189 Lassa fever deaths — NCDC


OUT  of  1,067  confirmed  cases  in  112  Local  Government  Areas in 27  states  of  the  Federation  in  2022,  more  than  89  deaths  from  Lassa  fever  were  reported.

The Nigeria  Centre  for  Disease  Control,  NCDC,  reported  that  there  were  8,202  suspected  cases  of  Lassa  fever  for  Epi  Week  52:  26  December  2022–1  January  2023,  even  though  63  healthcare  personnel  were  among  the  victims.

The Report also noted that the number of reported deaths with a case fatality rate (CFR) of 17.7 percent was lower than the CFR for the same period in 2021 (20.0 percent).

  According to the NCDC, the number of suspected cases   increased compared to that reported for the same period in 2021. In other words, Nigeria recorded more suspected Lassa fever cases towards the end of 2022 compared to the same period in 2021. “In total for 2022, 27 states have recorded at least one confirmed case across 112 LGAs, and 72 percent of all confirmed Lassa fever cases were reported from Ondo, Edo and Bauchi) while 23 percent were reported from 24 states with confirmed Lassa fever cases.  

The Agency pointed out that of the 72 percent of confirmed cases, Ondo State reported 33 percent, Edo 25 percent, and Bauchi 14 percent.

It said that the predominant age group affected is 21-30 years, while the male-to-female ratio for confirmed cases is 1:0.8  

In week 52, the Agency noted that number of new confirmed cases decreased from 17 in week51, 2022, to 12 cases. These were reported from Edo, Ebonyi and Benue States.

According to the Agency, no new healthcare worker was affected in the reporting week 52.

The Agency said that the National Lassa fever multi-partner, multi-sectoral Technical Working Group(TWG)continues to coordinate the response activities at all levels.

Lassa fever is an animal-borne,   acute viral illness spread by the common African rat (Mastomys). It is endemic in parts of West Africa including Sierra Leone, Liberia, Guinea and Nigeria.  

About 100,000 to 300,000 infections of Lassa fever occur annually, with about 5,000 deaths.  

Ribavirin, an antiviral drug, has been used with success in Lassa fever patients. It has been shown to be most effective when given early in the course of the illness.  

According to NCDC, a suspected case is any individual presenting with one or more of   malaise, fever, headache, sore throat, cough, nausea, vomiting, diarrhoea, malaria, chest pain, hearing loss and either a history of contact with excreta or urine of rodents , or contact with a probable or confirmed Lassa fever case within a period of 21 days of onset of symptoms or any person with inexplicable bleeding/hemorrhagia.  

The Agency stated that a confirmed case is any suspected case with laboratory confirmation, while a probable case is any suspected case who died or absconded without collection of specimen for laboratory testing.

The primary transmission of the Lassa virus from its host to humans can be prevented by avoiding contact with the vector.

Culled from Vanguard

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