Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana.
Dengue, Zika and chikungunya are Aedes-borne viral diseases that have become great global health concerns in the past years. Several countries in Africa have reported outbreaks of these diseases and despite Ghana sharing borders with some of these countries, such outbreaks are yet to be detected. Vi...
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Public Library of Science (PLoS)
2023-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0295390&type=printable |
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| author | Nukunu Etornam Akyea-Bobi Jewelna Akorli Millicent Opoku Samuel Sowah Akporh Godwin Kwame Amlalo Joseph Harold Nyarko Osei Kwadwo Kyereme Frempong Sellase Pi-Bansa Helena Anokyewaa Boakye Mufeez Abudu Esinam Abla Akorli Dominic Acquah-Baidoo Rebecca Pwalia Joseph Humphrey Kofi Bonney Reginald Quansah Samuel Kweku Dadzie |
| author_facet | Nukunu Etornam Akyea-Bobi Jewelna Akorli Millicent Opoku Samuel Sowah Akporh Godwin Kwame Amlalo Joseph Harold Nyarko Osei Kwadwo Kyereme Frempong Sellase Pi-Bansa Helena Anokyewaa Boakye Mufeez Abudu Esinam Abla Akorli Dominic Acquah-Baidoo Rebecca Pwalia Joseph Humphrey Kofi Bonney Reginald Quansah Samuel Kweku Dadzie |
| author_sort | Nukunu Etornam Akyea-Bobi |
| collection | DOAJ |
| description | Dengue, Zika and chikungunya are Aedes-borne viral diseases that have become great global health concerns in the past years. Several countries in Africa have reported outbreaks of these diseases and despite Ghana sharing borders with some of these countries, such outbreaks are yet to be detected. Viral RNA and antibodies against dengue serotype-2 have recently been reported among individuals in some localities in the regional capital of Ghana. This is an indication of a possible silent transmission ongoing in the population. This study, therefore, investigated the entomological transmission risk of dengue, Zika and chikungunya viruses in a forest and domestic population in the Greater Accra Region, Ghana. All stages of the Aedes mosquito (egg, larvae, pupae and adults) were collected around homes and in the forest area for estimation of risk indices. All eggs were hatched and reared to larvae or adults for morphological identification together with larvae and adults collected from the field. The forest population had higher species richness with 7 Aedes species. The predominant species of Aedes mosquitoes identified from both sites was Aedes aegypti (98%). Aedes albopictus, an important arbovirus vector, was identified only in the peri-domestic population at a prevalence of 1.5%, significantly higher than previously reported. All risk indices were above the WHO threshold except the House Index for the domestic site which was moderate (19.8). The forest population recorded higher Positive Ovitrap (34.2% vs 26.6%) and Container (67.9% vs 36.8%) Indices than the peri-domestic population. Although none of the mosquito pools showed the presence of dengue, chikungunya or Zika viruses, all entomological risk indicators showed that both sites had a high potential arboviral disease transmission risk should any of these viruses be introduced. Continuous surveillance is recommended in these and other sites in the Metropolis to properly map transmission risk areas to inform outbreak preparedness strategies. |
| first_indexed | 2024-03-08T19:57:26Z |
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| id | doaj.art-b80c0db6b5374326b2d174c97f6f9855 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-03-08T19:57:26Z |
| publishDate | 2023-01-01 |
| publisher | Public Library of Science (PLoS) |
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| series | PLoS ONE |
| spelling | doaj.art-b80c0db6b5374326b2d174c97f6f98552023-12-24T05:33:19ZengPublic Library of Science (PLoS)PLoS ONE1932-62032023-01-011812e029539010.1371/journal.pone.0295390Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana.Nukunu Etornam Akyea-BobiJewelna AkorliMillicent OpokuSamuel Sowah AkporhGodwin Kwame AmlaloJoseph Harold Nyarko OseiKwadwo Kyereme FrempongSellase Pi-BansaHelena Anokyewaa BoakyeMufeez AbuduEsinam Abla AkorliDominic Acquah-BaidooRebecca PwaliaJoseph Humphrey Kofi BonneyReginald QuansahSamuel Kweku DadzieDengue, Zika and chikungunya are Aedes-borne viral diseases that have become great global health concerns in the past years. Several countries in Africa have reported outbreaks of these diseases and despite Ghana sharing borders with some of these countries, such outbreaks are yet to be detected. Viral RNA and antibodies against dengue serotype-2 have recently been reported among individuals in some localities in the regional capital of Ghana. This is an indication of a possible silent transmission ongoing in the population. This study, therefore, investigated the entomological transmission risk of dengue, Zika and chikungunya viruses in a forest and domestic population in the Greater Accra Region, Ghana. All stages of the Aedes mosquito (egg, larvae, pupae and adults) were collected around homes and in the forest area for estimation of risk indices. All eggs were hatched and reared to larvae or adults for morphological identification together with larvae and adults collected from the field. The forest population had higher species richness with 7 Aedes species. The predominant species of Aedes mosquitoes identified from both sites was Aedes aegypti (98%). Aedes albopictus, an important arbovirus vector, was identified only in the peri-domestic population at a prevalence of 1.5%, significantly higher than previously reported. All risk indices were above the WHO threshold except the House Index for the domestic site which was moderate (19.8). The forest population recorded higher Positive Ovitrap (34.2% vs 26.6%) and Container (67.9% vs 36.8%) Indices than the peri-domestic population. Although none of the mosquito pools showed the presence of dengue, chikungunya or Zika viruses, all entomological risk indicators showed that both sites had a high potential arboviral disease transmission risk should any of these viruses be introduced. Continuous surveillance is recommended in these and other sites in the Metropolis to properly map transmission risk areas to inform outbreak preparedness strategies.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0295390&type=printable |
| spellingShingle | Nukunu Etornam Akyea-Bobi Jewelna Akorli Millicent Opoku Samuel Sowah Akporh Godwin Kwame Amlalo Joseph Harold Nyarko Osei Kwadwo Kyereme Frempong Sellase Pi-Bansa Helena Anokyewaa Boakye Mufeez Abudu Esinam Abla Akorli Dominic Acquah-Baidoo Rebecca Pwalia Joseph Humphrey Kofi Bonney Reginald Quansah Samuel Kweku Dadzie Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana. PLoS ONE |
| title | Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana. |
| title_full | Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana. |
| title_fullStr | Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana. |
| title_full_unstemmed | Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana. |
| title_short | Entomological risk assessment for transmission of arboviral diseases by Aedes mosquitoes in a domestic and forest site in Accra, Ghana. |
| title_sort | entomological risk assessment for transmission of arboviral diseases by aedes mosquitoes in a domestic and forest site in accra ghana |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0295390&type=printable |
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