Dengue Fever Hits Spain Malaria Stalks Greece Welcome to a Warmer World
B. McPherson
Increased risk of disease in animals as well as people is expected in a warmer world.
Dengue fever has hit Spain with a whallop. Nearly a thousand
people have contracted the mosquito borne disease. Dengue is also known as
breakbone fever because of the pain it causes and can develop into a
hemorrhagic fever as well. Currently the Portuguese island archipelago of
Madiera is reporting more than a thousand cases.
Malaria is an old scourge that is making a comeback in many
countries and new inroads in others. In the US, Texas, Florida and Hawaii have
all reported cases, some from returned travellers to tropical countries, but
not all. The SE of the US is a potential site for the re-establishment of this
disease. Portugal, France, Croatia and Greece have all reported outbreaks in
recent years. More than a million people
die around the world each year from it.
Chikungunya Fever is another, formerly tropical disease that
has made its way to Europe and the Americas. An outbreak in northeastern Italy
in 2007 struck.
These sometimes fatal and often crippling diseases have a
common thread. They all are spread by mosquitoes. They thrive in warm, moist
places.
Earth has warmed about 0.6 degrees Celsius since modern
record keeping. This may seem insignificant, but it is enough to allow disease
spreading insects to colonize new territories.
Vulnerability to insect borne diseases increases as crowding
and poverty increases. Population increases and competition for resources
trigger civil conflicts resulting in refugees that may have been in poor health
who serve as a pool of potential disease. Overcrowding in refugee camps serves
to further exacerbate a difficult situation. Crowding into urban areas provides
better opportunities for insects to spread disease. Mosquitoes can successfully
breed in small amounts of stagnant water – discarded plastic cups, tins, old
tires – all serve as nurseries for them.
Agricultural practises can make the breeding of mosquitoes
more successful. Irrigation and damming can create ideal hatcheries for the
little blood suckers.
Countries around the world are facing financial hardship.
Whether it is called a recession, depression or privation, public health often
suffers. Measures to control insects, air conditioning, effective screening of
dwellings, good clothing to keep out biting insects, treated netting all become
too costly to provide to the very poor. It does no good to tell a homeless
person that they should at least sleep inside a treated net. Where would they
hang it? From a tree?
As we move forward into a warmer world, illnesses that we
used to think of as tropical will encroach on our safe havens. In the modern “global
village” an epidemic is only a plane ride away. We cannot sit safely in our
temperate climates. We need to incorporate the best public health methods that
we can. In the long run, it will be a cost saving measure. As the old saying
goes, “An ounce of prevention is worth a pound of cure.”
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