Incubation Periods of Yellow Fever Virus

Johansson, Michael A.; Arana-Vizcarrondo, Neysarí; Biggerstaff, Brad J.; Staples, J. Erin

doi:10.4269/ajtmh.2010.09-0782

Cited by 85 publications

(77 citation statements)

References 42 publications

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“…For the IIP, the gamma and log-normal models were similar and there was no clearly favored model. We previously found that the yellow fever virus (YFV) EIP data was best described by a Weibull model, with the log-normal model a close second, and that the YFV IIP was best described as by a log-normal distribution [66]. In all cases, the log-normal model provided the optimal or near-optimal fit out of the models investigated.…”

Section: Discussionmentioning

confidence: 91%

The Incubation Periods of Dengue Viruses

2012

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Dengue viruses are major contributors to illness and death globally. Here we analyze the extrinsic and intrinsic incubation periods (EIP and IIP), in the mosquito and human, respectively. We identified 146 EIP observations from 8 studies and 204 IIP observations from 35 studies. These data were fitted with censored Bayesian time-to-event models. The best-fitting temperature-dependent EIP model estimated that 95% of EIPs are between 5 and 33 days at 25°C, and 2 and 15 days at 30°C, with means of 15 and 6.5 days, respectively. The mean IIP estimate was 5.9 days, with 95% expected between days 3 and 10. Differences between serotypes were not identified for either incubation period. These incubation period models should be useful in clinical diagnosis, outbreak investigation, prevention and control efforts, and mathematical modeling of dengue virus transmission.

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Section: Discussionmentioning

confidence: 91%

The Incubation Periods of Dengue Viruses

2012

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“…However, in areas that are already conducive to transmission of mosquito‐borne diseases, warming temperatures might move the environment away from the thermal optimum. Recent experimental and modeling work suggests that these areas could experience range contractions rather than range expansions of vector‐borne diseases owing to this nonlinear relationship between transmission and temperature …”

Section: Arbovirus Transmission In a Changing Worldmentioning

confidence: 99%

Zika and chikungunya: mosquito‐borne viruses in a changing world

Shragai

Tesla

Murdock

et al. 2017

Annals of the New York Academy of Sciences

102

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The reemergence and growing burden of mosquito-borne virus infections have incited public fear and growing research efforts to understand the mechanisms of infection-associated health outcomes and to provide better approaches for mosquito vector control. While efforts to develop therapeutics, vaccines, and novel genetic mosquitocontrol technologies are underway, many important underlying ecological questions remain that could significantly enhance our understanding and ability to predict and prevent transmission. Here, we review the current knowledge about the transmission ecology of two recent arbovirus invaders, the chikungunya and Zika viruses. We introduce the viruses and mosquito vectors, highlighting viral biology, historical routes of transmission, and viral mechanisms facilitating rapid global invasion. In addition, we review factors contributing to vector global invasiveness and transmission efficiency. We conclude with a discussion of how human-induced biotic and abiotic environmental changes facilitate mosquito-borne virus transmission, emphasizing critical gaps in understanding. These knowledge gaps are tremendous; much of our data on basic mosquito ecology in the field predate 1960, and the mosquitoes themselves, as well as the world they live in, have substantially changed. A concerted investment in understanding the basic ecology of these vectors, which serve as the main drivers of pathogen transmission in both wildlife and human populations, is now more important than ever.

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“…This has been studied for malaria parasites of rodents 26,48 , birds 28–30 , lizards 49 and humans 25,50,51 ; West Nile virus 20 ; dengue virus 19 ; and yellow fever virus 21 . In general, most of these studies show that warming temperatures are associated with a reduction in the development time of the parasite or pathogen.…”

Section: Temperature and Resistancementioning

confidence: 99%

“…Third, research on a wide range of invertebrates demonstrates that small, realistic changes in ambient temperature can significantly shape overall host resistance to a range of parasites by influencing, for example, parasite virulence, development rates, latency periods and clearance rates within the insect (see Supplementary information S1 (table)). Fourth, numerous studies have already found that the development rates of key vector-borne parasites are strongly temperature dependent; this has been shown for dengue virus 19 , West Nile virus 20 , yellow fever virus 21 , chikungunya virus 22 and filarial nematodes 23,24 , as well as human 25 , rodent 26,27 and avian 28–30 malaria parasites. The extent to which temperature shapes vector resistance directly, through such effects on parasite biology, or indirectly, through effects on vector immunity, remains largely unexplored.…”

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confidence: 96%

Rethinking vector immunology: the role of environmental temperature in shaping resistance

et al. 2012

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Recent ecological research has revealed that environmental factors can strongly affect insect immunity and influence the outcome of host–parasite interactions. To date, however, most studies examining immune function in mosquitoes have ignored environmental variability. We argue that one such environmental variable, temperature, influences both vector immunity and the parasite itself. As temperatures in the field can vary greatly from the ambient temperature in the laboratory, it will be essential to take temperature into account when studying vector immunology.

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Incubation Periods of Yellow Fever Virus

Cited by 85 publications

References 42 publications

The Incubation Periods of Dengue Viruses

The Incubation Periods of Dengue Viruses

Zika and chikungunya: mosquito‐borne viruses in a changing world

Rethinking vector immunology: the role of environmental temperature in shaping resistance

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