Publications by authors named "Martial G Yonga"
During 1979-2022, Cameroon recorded 32 laboratory-confirmed mpox cases among 137 suspected mpox cases identified by the national surveillance network. The highest positivity rate occurred in 2022, indicating potential mpox re-emergence in Cameroon. Both clade I (n = 12) and clade II (n = 18) monkeypox virus (MPXV) were reported, a unique feature of mpox in Cameroon.
View Article and Find Full Text PDFBackground: The re-emergence of yellow fever poses a serious public health risk to unimmunized communities in the tropical regions of Africa and South America and unvaccinated travelers visiting these regions. This risk is further accentuated by the likely spread of the virus to areas with potential for yellow fever transmission such as in Asia, Europe, and North America. To mitigate this risk, surveillance of yellow fever is pivotal.
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- The study sequenced part of the E1 envelope protein gene from two chikungunya virus (CHIKV) samples collected during the 2020 outbreak in Chad.
- Phylogenetic analysis indicated that the viruses were part of the East/Central/South African genotype and did not have specific mutations known for enhancing adaptability and transmission.
- The findings provide important genetic information that can help monitor the evolution of the virus in future outbreaks in the region.
A monkeypox virus was detected from a human clinical case in 2018 in Cameroon; a country where no human cases were reported since 1989. The virus exhibited close genetic relatedness with another monkeypox virus isolated in Nigeria during the 2017-2018 outbreak. Although our molecular findings argue in favor of an extension of the monkeypox outbreak from Nigeria into Cameroon, the possibility that the monkeypox virus detected could be indigenous to Cameroon cannot be ruled out.
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