Medio ambiente, ecología y epidemias

¿Te interesa entender más sobre los factores que propician la aparición de enfermedades como el Covid-19?

Te compartimos este video sobre el seminario “Degradación de ecosistemas y enfermedades emergentes”, organizada por el COUS, UNAM. Aporta un panorama muy claro sobre la relación de los humanos con la naturaleza, sus devastadoras consecuencias y cómo podemos cambiar con miras a un futuro sustentable.

Plática organizada por COUS, UNAM.

Artículos de investigación relevantes:

Global shifts in mammalian population
trends reveal key predictors of virus
spillover risk

Johnson CK, Hitchens PL,
Pandit PS, Rushmore J, Evans TS, Young CCW,
Doyle MM. (2020) Proc. R. Soc. B 287: 20192736.
http://dx.doi.org/10.1098/rspb.2019.2736

Emerging infectious diseases in humans are frequently caused by pathogens
originating from animal hosts, and zoonotic disease outbreaks present a
major challenge to global health. To investigate drivers of virus spillover, we
evaluated the number of viruses mammalian species have shared with
humans. We discovered that the number of zoonotic viruses detected in mam-
malian species scales positively with global species abundance, suggesting
that virus transmission risk has been highest from animal species that have
increased in abundance and even expanded their range by adapting to
human-dominated landscapes. Domesticated species, primates and bats
were identified as having more zoonotic viruses than other species. Among
threatened wildlife species, those with population reductions owing to exploi-
tation and loss of habitat shared more viruses with humans. Exploitation of
wildlife through hunting and trade facilitates close contact between wildlife
and humans, and our findings provide further evidence that exploitation, as
well as anthropogenic activities that have caused losses in wildlife habitat
quality, have increased opportunities for animal–human interactions and
facilitated zoonotic disease transmission. Our study provides new evidence
for assessing spillover risk from mammalian species and highlights conver-
gent processes whereby the causes of wildlife population declines have
facilitated the transmission of animal viruses to humans.

Publicado por Laboratorio Origen de la Vida

Página creada por el Laboratorio de Origen de la Vida, Departamento de Biología Evolutiva de la Universidad Nacional Autónoma de México.

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