Kyasanur forest disease virus (KFDV) is a rapidly expanding tick-borne zoonotic virus with natural foci in the forested region of the Western Ghats of South India. The Western Ghats is one of the world's most important biodiversity hotspots and, like many such areas of high biodiversity, is under significant pressure from anthropogenic landscape change. The current study sought to quantify mammalian species richness using ensemble models of the distributions of a sample of species extant in the Western Ghats and to explore its association with KFDV outbreaks, as well as the modifying effects of deforestation on this association. Species richness was quantified as a composite of individual species' distributions, as derived from ensembles of boosted regression tree, random forest, and generalised additive models. Species richness was further adjusted for the potential biotic constraints of sympatric species. Both species richness and forest loss demonstrated strong positive associations with KFDV outbreaks, however forest loss substantially modified the association between species richness and outbreaks. High species richness was associated with increased KFDV risk but only in areas of low forest loss. In contrast, lower species richness was associated with increased KFDV risk in areas of greater forest loss. This relationship persisted when species richness was adjusted for biotic constraints at the taluk-level. In addition, the taluk-level species abundances of three monkey species (
Macaca radiata
,
Semnopithecus hypoleucus
, and
Semnopithecus priam
) were also associated with outbreaks. These results suggest that increased monitoring of wildlife in areas of significant habitat fragmentation may add considerably to critical knowledge gaps in KFDV epidemiology and infection ecology and should be incorporated into novel One Health surveillance development for the region. In addition, the inclusion of some primate species as sentinels of KFDV circulation into general wildlife surveillance architecture may add further value.
Background
The impact of excessive screen time with personal listening devices (PLDs) on vision, hearing, balance, and overall health among adults has been reported in the literature. However, its impact on children is not well documented. A survey was undertaken to highlight the possible effects of screen time combined with transducers on vision, hearing, balance, and overall health complaints in children via parental proxy. This cross-sectional survey consisted of questions divided into four domains: vision, hearing, balance, and overall health. It was conducted online using social media to avail total maximum responses.
Results
A total of 136 responses were obtained from the parents of children studying from grade 1 to 8 through the survey conducted in south India. Increased negative impact on vision was observed in more than 50% of children. Similarly, the hearing and balance domain reported 16% ear pain, 4.4% tinnitus, 9.6% dizziness, 8.8% nausea, and 2.2% imbalance while walking. Likewise, the overall stress domain reported 26.5% general body discomfort, 37.5% neck pain and stiffness, 29.4% headaches, 43.4% lack of concentration, 39.7% overall changes in child’s health and 46.3% behavioral issues with various severity markings (slight to severe).
Conclusions
Longer periods of screen exposure have various negative impacts on vision, hearing, balance system, and overall health. These effects have to be managed for the health of our children.
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