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Global Climate Change

Global Climate Change

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.

Factors Affecting the Risk of Infection

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...

Infection

Infection

When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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Migration

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Factors Affecting Body Temperature

Factors Affecting Body Temperature

As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
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Stages of Infection

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Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...

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Related Experiment Video

Updated: Oct 7, 2025

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Climate Change and Infections on the Move in North America.

Naomi Hauser^1,2, Kathryn C Conlon^2,3,4, Angel Desai¹

¹Department of Medicine, Division of Infectious Disease, University of California Davis Health, Sacramento, CA, USA.

Infection and Drug Resistance

|January 10, 2022

Summary

Climate change impacts human health by altering infectious disease patterns. Understanding these links helps clinicians diagnose and treat infections linked to environmental shifts.

Keywords:

antimicrobial resistance climate change environment global warming infectious disease

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Published on: September 28, 2022

Area of Science:

Environmental Health
Infectious Disease Epidemiology
Climate Change Research

Background:

Climate change significantly affects human health, influencing infectious disease dynamics.
Ecological shifts driven by climate change alter pathogen transmission, hosts, and pathogen characteristics.
Understanding these complex interactions is crucial for public health.

Purpose of the Study:

To highlight the mechanisms through which climate change influences infectious diseases.
To expand the diagnostic framework for clinicians facing complex infections.
To prepare healthcare professionals for future climate-related disease impacts.

Main Methods:

Review of scientific literature on climate change and infectious diseases.
Analysis of ecological factors (temperature, precipitation, disturbances) affecting disease transmission.
Case examples illustrating climate-driven infectious disease pathways (water, fire, land, insects, human).

Main Results:

Climate change alters pathogen transmission routes via water, fire, land use, insect vectors, and human behavior.
Ecological changes create novel or modified habitats for pathogens and vectors.
Shifts in host susceptibility and pathogen virulence are observed.

Conclusions:

Clinicians must consider climate change impacts when diagnosing infectious diseases.
Integrating climate-environment-disease relationships enhances diagnostic capabilities.
Preparedness for future infectious disease challenges requires interdisciplinary awareness.