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Microbes and Climate Change01:27

Microbes and Climate Change

Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...
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Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
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Updated: Jun 21, 2026

Experimental Viral Infection in Adult Mosquitoes by Oral Feeding and Microinjection
08:02

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Published on: July 28, 2022

Bunyaviruses and climate change.

R M Elliott1

  • 1Centre for Biomolecular Sciences, University of St Andrews, St Andrews, UK. rme1@st-andrews.ac.uk

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
|July 17, 2009
PubMed
Summary
This summary is machine-generated.

Climate change is often blamed for infectious disease outbreaks. However, this review argues that disease emergence is complex, exploring climate change's potential role in bunyavirus disease spread.

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Area of Science:

  • Environmental Science
  • Epidemiology
  • Virology

Background:

  • The planet is experiencing climatic changes, leading to 'climate change' being widely cited as a cause for various catastrophes.
  • Infectious disease outbreaks are frequently attributed to climate change, a view Randolph and Ergonul (2008) describe as a simplistic explanation.
  • A complex interplay of factors, not solely climate change, drives disease emergence and re-emergence.

Purpose of the Study:

  • To critically examine the simplistic view linking climate change to infectious diseases.
  • To investigate the potential role of climate change in the emergence of bunyavirus diseases.
  • To use selected examples to illustrate the complex relationship between climate and viral disease emergence.

Main Methods:

  • Literature review of scientific publications on climate change and infectious diseases.
  • Analysis of existing data on bunyavirus disease outbreaks and climatic factors.
  • Case study approach examining specific examples of bunyavirus emergence.

Main Results:

  • The direct causal link between climate change and all infectious disease outbreaks is an oversimplification.
  • Climate change can act as one factor among many influencing the emergence and spread of diseases like bunyavirus.
  • Environmental and ecological shifts associated with climate change can create conditions favorable for vector-borne diseases.

Conclusions:

  • Attributing disease outbreaks solely to climate change ignores multifactorial causes.
  • Understanding the complex ecological and climatic drivers is crucial for predicting and managing bunyavirus disease emergence.
  • Further research is needed to elucidate the specific mechanisms through which climate change influences viral disease epidemiology.