EMERGING
AND RE-EMERGING INFECTIOUS DISEASES
"When
a species increases inordinately in numbers in a small tract, epidemics
often ensue; and here we have a limiting check independent of the
struggle for life."
Charles
Darwin On the Origin of Species
Environmental
disruptions and lack of appropriate planning for human population growth
around the world are leading to the emergence of new diseases, such
as West Nile Fever, Ebola and Hantavirus, as well as the re-emergence
of previously contained diseases, such as tuberculosis and measles.
Many
people in urban areas may wonder how problems with the health of wildlife
and natural habitats could possibly impact them in the city -- in fact,
there is a very real link.
Stewart
Mitchell's article, Urban
Biomes An Ecological Niche For Potential Hantavirus Vectors,
discusses
how urban ecosystems can inadvertently foster the expansion of ranges
for disease-carrying organisms, such as the deer mouse vector of hantavirus.
In
the news:
The Emerging
Infectious Diseases Journal online, from the CDC.