Natural vertical transmission of dengue viruses in <i>Aedes aegypti</i>
 in selected sites in Cebu City, Philippines

Edillo, Frances E.; Sarcos, Janet R.; Sayson, Stephanie L.

doi:10.1111/jvec.12166

Cited by 25 publications

(28 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…aegypti mosquito samples in rainy season and in 85 pools in dry season. Infected MIR mosquitoes increased from 0 in rainy season to 48.22 per 1000 mosquitoes in the middle of dry season [9]. Similar results were also obtained from a study conducted in southern India in 204 samples of pools of female Ae.…”

Section: Detection Of Dengue Virus In Male and Female Aedes Aegypti Msupporting

confidence: 84%

Ovitrap Index and Transovarial Transmission Rate of Dengue Virus of Male and Female Aedes aegypti Mosquitoes in Makassar, South Sulawesi, Indonesia

Juhdi

Fitri

Zuhriyah

et al. 2019

JTLS

View full text Add to dashboard Cite

The incidence rate (IR) of dengue hemorrhagic fever (DHF) in Indonesia has increased in recent years and still causes a health problem. Makassar, as one of the big cities in Indonesia, is also experiencing of DHF cases. According to the Health Office of Makassar City, DHF cases during 2014-2016 has increased from 139 to 250 cases. The defense mechanism of dengue virus in transovarial transmission from female mosquitoes to eggs is estimated to be one of the factors that increase the rate of DHF. In addition, the circulation of the Aedes aegypti mosquitoes can also affect the increase of the rate. This study aims are to identify ovitrap index and to find out how much the vertical transmission of dengue virus by measuring the minimum infection rate (MIR) and the distribution of four dengue virus serotype in Ae. aegypti mosquitoes in the city of Makassar, South Sulawesi, as well as their association with the incidence rate (IR) in the area. This observational research uses ecological study with cross-sectional approach. The samples of the study are male and female mosquitoes from Ae.aegypti eggs obtained from the installation of ovitrap in 30 urban villages in Makassar. Dengue virus identification was performed using a reverse transcriptase polymerase chain reaction (RT-PCR). These results showed that the ovitrap index (IO) was in the range of 0-66.7%. The average value of the ovitrap index outside the house (44.44%) was greater than inside house (37.22%). The results of identification of dengue virus using RT-PCR showed negative results as indicated by the non-formation of a band on 75 pools male and 78 pools female Ae. aegypti mosquitoes after electrophoresis. The results of this study indicated that the Ae. aegypti mosquito in Makassar City showed a tendency to lay eggs outside the house due to the habit of the people who put rain water shelters outside the house which could become breeding place for Ae. aegypti mosquitoes. This study also showed that there was no transovarial transmission of DENV found in male and female Ae. aegypti mosquitoes in Makassar City during November 2017 until January 2018.

show abstract

Section: Detection Of Dengue Virus In Male and Female Aedes Aegypti Msupporting

confidence: 84%

Ovitrap Index and Transovarial Transmission Rate of Dengue Virus of Male and Female Aedes aegypti Mosquitoes in Makassar, South Sulawesi, Indonesia

Juhdi

Fitri

Zuhriyah

et al. 2019

JTLS

View full text Add to dashboard Cite

show abstract

“…Transovarial transmission of dengue virus was documented in the field, where different serotypes of dengue virus in larvae or male adult mosquitoes were detected in different areas of the world. 14, 15, 16 A series of laboratory studies confirmed that Ae. aegypti and Ae.…”

Section: Introductionmentioning

confidence: 90%

Vector competence and transovarial transmission of two Aedes aegypti strains to Zika virus

Guo

Deng

et al. 2017

Emerging Microbes & Infections

View full text Add to dashboard Cite

Zika virus (ZIKV) has become a serious threat to global health since the outbreak in Brazil in 2015. Additional Chinese cases have continuously been reported since the first case of laboratory-confirmed ZIKV infection in China on 6 February 2016. Aedes aegypti is the most important vector for ZIKV. This study shows that two strains from China exhibit high levels of midgut infection and highly disseminated infection of salivary glands and ovaries. Both strains can transmit ZIKV to infant mice bitten by infectious mosquitoes. Moreover, the results provide the evidence of transovarial transmission of ZIKV in mosquitoes. The study indicates that the two Ae. aegypti strains are not only effective transmission vectors but also persistent survival hosts for ZIKV during unfavorable inter-epidemic periods. This function as a reservoir of infection has epidemiological implications that further enhance the risk of potential future outbreaks.

show abstract

“…aegypti larvae, female and male mosquito and attributes together with seasonal variable into the predicted model in order to enhance the prediction power. This is because female mosquito can transmit dengue viruses through larvae by trans-ovarian transmission [ 12 , 32 , 33 ] and male mosquitoes can transmit the viruses to females via sexual transmission [ 12 , 33 ]. We found that the infected female mosquito together with season are directly correlated to the number of dengue cases and significantly useful for the forecasting model as confirmed by the results shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

Analysis of significant factors for dengue fever incidence prediction

et al. 2016

View full text Add to dashboard Cite

BackgroundMany popular dengue forecasting techniques have been used by several researchers to extrapolate dengue incidence rates, including the K-H model, support vector machines (SVM), and artificial neural networks (ANN). The time series analysis methodology, particularly ARIMA and SARIMA, has been increasingly applied to the field of epidemiological research for dengue fever, dengue hemorrhagic fever, and other infectious diseases. The main drawback of these methods is that they do not consider other variables that are associated with the dependent variable. Additionally, new factors correlated to the disease are needed to enhance the prediction accuracy of the model when it is applied to areas of similar climates, where weather factors such as temperature, total rainfall, and humidity are not substantially different. Such drawbacks may consequently lower the predictive power for the outbreak.ResultsThe predictive power of the forecasting model-assessed by Akaike’s information criterion (AIC), Bayesian information criterion (BIC), and the mean absolute percentage error (MAPE)-is improved by including the new parameters for dengue outbreak prediction. This study’s selected model outperforms all three other competing models with the lowest AIC, the lowest BIC, and a small MAPE value. The exclusive use of climate factors from similar locations decreases a model’s prediction power. The multivariate Poisson regression, however, effectively forecasts even when climate variables are slightly different. Female mosquitoes and seasons were strongly correlated with dengue cases. Therefore, the dengue incidence trends provided by this model will assist the optimization of dengue prevention.ConclusionsThe present work demonstrates the important roles of female mosquito infection rates from the previous season and climate factors (represented as seasons) in dengue outbreaks. Incorporating these two factors in the model significantly improves the predictive power of dengue hemorrhagic fever forecasting models, as confirmed by AIC, BIC, and MAPE.

show abstract

Natural vertical transmission of dengue viruses in Aedes aegypti in selected sites in Cebu City, Philippines

Cited by 25 publications

References 15 publications

Ovitrap Index and Transovarial Transmission Rate of Dengue Virus of Male and Female Aedes aegypti Mosquitoes in Makassar, South Sulawesi, Indonesia

Ovitrap Index and Transovarial Transmission Rate of Dengue Virus of Male and Female Aedes aegypti Mosquitoes in Makassar, South Sulawesi, Indonesia

Vector competence and transovarial transmission of two Aedes aegypti strains to Zika virus

Analysis of significant factors for dengue fever incidence prediction

Contact Info

Product

Resources

About