News / Health

Warmer Temps Trigger More Disease

FILE - Undated file photo provided by the U.S. Forest Service shows egg masses of the hemlock woolly adelgid. Scientists say climate change is a contributing factor.
FILE - Undated file photo provided by the U.S. Forest Service shows egg masses of the hemlock woolly adelgid. Scientists say climate change is a contributing factor.

Multimedia

Audio
  • Listen to De Capua report on climate change and disease

Joe DeCapua
Climate change is often associated with extreme weather events, melting glaciers and rising sea levels. But it could also have a major impact on human, animal and plant health by making it easier for diseases to spread.


Various germs and parasites may find the coming years a time to live longer and prosper. Rising temperatures are changing environments and removing some of their natural impediments.

Sonia Altizer is an associate professor at the University of Georgia’s Odum School of Ecology and lead author of the study. She said it’s a review of research done over the past 10 years to see what trends and new information on climate change have emerged.

“One of the big themes that has emerged is that there’s a lot of diseases, especially in natural systems, where there as a pretty clear signal that either the prevalence or severity of those diseases has increased in response to climate change.”

She said some of those natural systems where the signal is strongest are in the arctic and in warmer oceans.

“So in the arctic there are parasitic worms that affect muskox and reindeer, for example, that are developing faster and becoming more prevalent and expanding their ranges. And then in tropical oceans, like Caribbean coral reefs, there’s a large amount of evidence that has mounted that shows that warming interferes with the symbiosis of corals – makes them more vulnerable to disease and at the same time increases the growth rate of some lethal bacteria,” she said.

But a second theme emerged indicating that sometimes climate change may have no effect at all.

“The other main point that we focused on is that knowing why different pathogens respond differently to climate change is what’s needed to help us predict and ultimately manage disease outbreaks in people and animals and plants,” she said.

Some countries will be much better prepared to handle the disease threat than others, like those in Europe and North America.
.
“Surveillance, vector control, modern sanitation, drugs, vaccines can be deployed to prevent outbreaks of a lot of diseases, especially vector borne disease or diarrheal disease that are much more problematic in the developing world. And so these can counter the effects of climate change and make it hard to detect increases in those pathogens,” said Altizer.

Controlling vectors means controlling such things as mosquitos and ticks, which can carry malaria or dengue fever.

In developing countries, pathogens affecting agriculture and wildlife could adversely affect food security and the livelihoods of indigenous peoples.

So how concerned should health officials be? Altizer said there’s no simple answer.

“I think that the answer to it really depends on the location. So where, when and what pathogen? So I think we’re at a stage now where in the next five to ten years scientists will be able to move towards a predictive framework that will be able to answer questions about where in the world and what pathogens are responding and will continue to respond most strongly to climate change.”

Altizer says the effects of climate change will unfold over decades. So it’s vital to follow long-term standardized data for many diseases and pathogens. She said crop management may be a good example to follow. It has a long history of tracking disease outbreaks, forecasting potential threats and responding to those threats early.

You May Like

Changing Under Pressure, IS ‘Potent’ as Ever

US intel officials describe Ramadi's fall as concerning, but say it isn't emblematic of larger effort to degrade IS capabilities More

Nigeria Fuel Shortage Shows Fragility of Africa’s Oil Giant

Although it is the largest oil producer in Africa, country has nearly ran out of fuel it needs to power its generators, cars and airplanes over the past week More

Arrested Football Officials Come Mainly From the Americas

US Justice Department alleges defendants participated in 24-year scheme to enrich themselves through corruption of international soccer More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
3D Printer Makes Replica of Iconic Sports Cari
|| 0:00:00
...    
🔇
X
George Putic
May 27, 2015 9:31 PM
Cars with parts made by 3D printers are already on the road, but engineers are still learning about this new technology. While testing the possibility of printing an entire car, researchers at the U.S. Department of Energy recently created an electric-powered replica of an iconic sports roadster. VOA’s George Putic has more.
Video

Video 3D Printer Makes Replica of Iconic Sports Car

Cars with parts made by 3D printers are already on the road, but engineers are still learning about this new technology. While testing the possibility of printing an entire car, researchers at the U.S. Department of Energy recently created an electric-powered replica of an iconic sports roadster. VOA’s George Putic has more.
Video

Video US Voters Seek Answers From Presidential Candidates on IS Gains

The growth of the Islamic State militant group in Iraq and Syria comes as the 2016 U.S. presidential campaign kicks off in the Midwest state of Iowa.   As VOA’s Kane Farabaugh reports, voters want to know how the candidates would handle recent militant gains in the Middle East.
Video

Video A Small Oasis on Kabul's Outskirts Provides Relief From Security Tensions

When people in Kabul want to get away from the city and relax, many choose Qargha Lake, a small resort on the outskirts of Kabul. Ayesha Tanzeem visited and talked with people about the precious oasis.
Video

Video Film Festival Looks at Indigenous Peoples, Culture Conflict

A recent Los Angeles film festival highlighted the plight of people caught between two cultures. Mike O'Sullivan has more on the the Garifuna International Film Festival, a Los Angeles forum created by a woman from Central America who wants the world to know more about her culture.
Video

Video Kenyans Lament Losing Sons to al-Shabab

There is agony, fear and lost hope in the Kenyan town of Isiolo, a key target of a new al-Shabab recruitment drive. VOA's Mohammed Yusuf visits Isiolo to speak with families and at least one man who says he was a recruiter.
Video

Video Scientists Say Plankton More Important Than Previously Thought

Tiny ocean creatures called plankton are mostly thought of as food for whales and other large marine animals, but a four-year global study discovered, among other things, that plankton are a major source of oxygen on our planet. VOA’s George Putic reports.
Video

Video US-led Coalition Gives Some Weapons to Iraqi Troops

In a video released Tuesday from the Iraqi Ministry of Defense, Iraqi forces and U.S.-led coalition troops survey a cache of weapons supplied to help Iraq liberate Mosul from Islamic State group. According to a statement provided with the video, the ministry and the U.S.-led coaltion troops have started ''supplying the 16th army division with medium and light weapons in preparation to liberate Mosul and nearby areas from Da'esh (Arabic acronym for Islamic State group).''
Video

Video Amnesty International: 'Overwhelming Evidence' of War Crimes in Ukraine

Human rights group Amnesty International says there is overwhelming evidence of ongoing war crimes in Ukraine, despite a tentative cease-fire with pro-Russian rebels. Researchers interviewed more than 30 prisoners from both sides of the conflict and all but one said they were tortured. Henry Ridgwell reports for VOA from London.
Video

Video Washington Parade Honors Those Killed Serving in US Military

Every year, on the last Monday in the month of May, millions of Americans honor the memories of those killed while serving in the armed forces. Memorial Day is a tradition that dates back to the 19th Century. While many people celebrate the federal holiday with a barbecue and a day off from work, for those who’ve served in the military, it’s a special day to remember those who made the ultimate sacrifice. Arash Arabasadi reports for VOA from Washington.
Video

Video Kenya’s Capital Sees Rise in Shisha Parlors

In Kenya, the smoking of shisha, a type of flavored tobacco, is the latest craze. Patrons are flocking to shisha parlors to smoke and socialize. But the practice can be addictive and harmful, though many dabblers may not realize the dangers, according to a new review. Lenny Ruvaga has more on the story for VOA from Nairobi, Kenya.
Video

Video Rolling Thunder Run Reveals Changed Attitudes Towards Vietnam War

For many US war veterans, the Memorial Day holiday is an opportunity to look back at a divisive conflict in the nation’s history and to remember those who did not make it home.
Video

Video Female American Soldiers: Healing Through Filmmaking

According to the United States Defense Department, there are more than 200-thousand women serving in the U.S. Armed Forces.  Like their male counterparts, females have experiences that can be very traumatic.  VOA's Bernard Shusman tells us about a program that is helping some American women in the military heal through filmmaking.

VOA Blogs