Month: September 2022

A helicopter herds thousands of impalas into an enclosure. A crane hoists sedated upside-down elephants into trailers. Hordes of rangers drive other animals into metal cages and a convoy of trucks starts a journey of about 700 kilometers to take the animals to their new home.

Zimbabwe has begun moving more than 2,500 wild animals from a southern reserve to one in the country’s north to rescue them from drought, as the ravages of climate change replace poaching as the biggest threat to wildlife.

About 400 elephants, 2,000 impalas, 70 giraffes, 50 buffaloes, 50 wildebeest, 50 zebras, 50 elands, 10 lions and a pack of 10 wild dogs are among the animals being moved from Zimbabwe’s Save Valley Conservancy to three conservancies in the north — Sapi, Matusadonha and Chizarira — in one of southern Africa’s biggest live animal capture and translocation exercises.

“Project Rewild Zambezi,” as the operation is called, is moving the animals to an area in the Zambezi River valley to rebuild the wildlife populations there.

It’s the first time in 60 years that Zimbabwe has embarked on such a mass internal movement of wildlife. Between 1958 and 1964, when the country was white-minority-ruled Rhodesia, more than 5,000 animals were moved in what was called “Operation Noah.” That operation rescued wildlife from the rising water caused by the construction of a massive hydro-electric dam on the Zambezi River that created one of the world’s largest man-made lakes, Lake Kariba.

This time it’s the lack of water that has made it necessary to move wildlife as their habitat has become parched by prolonged drought, said Tinashe Farawo, spokesperson for the Zimbabwe National Parks and Wildlife Management Authority.

The parks agency issued permits to allow the animals to be moved to avert “a disaster from happening,” said Farawo.

“We are doing this to relieve pressure. For years we have fought poaching and just as we are winning that war, climate change has emerged as the biggest threat to our wildlife,” Farawo told The Associated Press.

“Many of our parks are becoming overpopulated and there is little water or food. The animals end up destroying their own habitat, they become a danger unto themselves and they encroach neighboring human settlements for food resulting in incessant conflict,” he said.

One option would be culling to reduce the numbers of wildlife, but conservation groups protest that such killings are cruel. Zimbabwe last did culling in 1987, said Farawo.

The effects of climate change on wildlife is not isolated to Zimbabwe. Across Africa, national parks that are home to myriad wildlife species such as lions, elephants and buffaloes are increasingly threatened by below-average rainfall and new infrastructure projects. Authorities and experts say drought has seriously threatened species like rhinos, giraffes and antelopes as it reduces the amount of food available.

For example, a recent study conducted in South Africa’s Kruger National Park linked extreme weather events to the loss of plants and animals, unable to cope with the drastic conditions and lack of water due to longer dry spells and hotter temperatures.

The mass movement is supported by the Great Plains Foundation, a non-profit organization that works “to conserve and expand natural habitats in Africa through innovative conservation initiatives,” according to its website. The organization is working with the Zimbabwe National Parks and Wildlife Management Authority, local experts, the University of Washington-Seattle’s Center for Environmental Forensic Science and Oxford University’s Department of Zoology, according to the website.

One of the new homes for the animals moved in Zimbabwe is Sapi Reserve. the privately run 280,000-acre private concession is east of Mana Pools National Park, a UNESCO World Heritage Site known for its splendid setting along the Zambezi River that forms the border between Zimbabwe with Zambia.

Sapi “is the perfect solution for many reasons,” Great Plains Chief Executive Officer Dereck Joubert said on the foundation’s website.

“This reserve forms the middle-Zambezi biosphere, totaling 1.6 million acres,” wrote Joubert. “From the 1950s until we took it over in 2017, decades of hunting had decimated wildlife populations in Sapi Reserve. We are rewilding and restoring the wild back to what it once was.”

Source: Voice of America

U.S. health advisers on Thursday endorsed new COVID-19 boosters that target today’s most common omicron strains, saying if enough people roll up their sleeves, the updated shots could blunt a winter surge.

The tweaked shots made by Pfizer and Moderna promise Americans a chance at their most up-to-date protection at yet another critical period in the pandemic. They’re combination or “bivalent” shots, half the original vaccine and half protection against the BA.4 and BA.5 omicron versions now causing nearly all COVID-19 infections.

Advisers to the Centers for Disease Control and Prevention struggled with who should get the new booster and when, because only a similarly tweaked vaccine, not the exact recipe, has been studied in people so far.

But ultimately, the panel deemed it the best option considering the U.S. still is experiencing tens of thousands of COVID-19 cases and about 500 deaths every day — even before an expected new winter wave.

“I think they’re going to be an effective tool for disease prevention this fall and into the winter,” said CDC adviser Dr. Matthew Daley of Kaiser Permanente Colorado.

Comparing the tweak that has been studied in people and the one the U.S. actually will use, “it is the same scaffolding, part of the same roof. We’re just putting in some dormers and windows,” said Dr. Sarah Long of Drexel University.

The CDC is expected to adopt that recommendation soon, the last step before shots can begin. Millions of doses are expected to reach vaccination sites nationwide by Labor Day, CDC officials said.

Protection continues

The original COVID-19 vaccines still offer strong protection against severe illness and death, especially among younger and healthier people who’ve gotten at least one booster.

But those vaccines were designed to target the virus strain that circulated in early 2020. Effectiveness drops as new mutants emerge and the longer it’s been since someone’s last shot. Since April, hospitalization rates in people over age 65 have jumped, the CDC said.

The new, updated shots are only for use as a booster, not for someone’s first COVID vaccinations. The Food and Drug Administration cleared Pfizer’s bivalent option for people 12 and older, while Moderna’s is for adults only.

A big unknown: exactly how much benefit people will get from one of those extra shots.

The CDC said more than 1,400 people have been included in studies of a prior tweak to the vaccine recipe — targeting an earlier omicron strain named BA.1. That omicron-targeting combo shot proved safe and able to rev up virus-fighting antibodies — and European regulators on Thursday recommended using that type of booster.

In the U.S., the FDA wanted fall boosters to target the currently circulating omicron strains — and rather than waiting until possibly November for more human studies to be finished, the agency accepted mouse testing that showed the newer tweak sparked a similarly good immune response.

That’s how flu vaccines are updated every year, the CDC noted.

Still, several CDC advisers said that to get the maximum benefit, people will need to wait longer between their last vaccination and getting the new booster than the two months that the FDA set as the minimum. Waiting at least three months would be better, from the last shot or if someone had recently recovered from COVID-19, they said.

Before this new COVID-19 booster update, people 50 and older already were urged to get a second booster of the original vaccine — and those who did saw some extra protection, especially the longer it had been since their last shot, said CDC’s Dr. Ruth Link-Gelles.

The new combination booster “should provide at least similar or better protection against omicron, since it’ll be a better match” to today’s virus strains, she told the panel.

Source: Voice of America

The U.S. National Hurricane Center reported Thursday that Tropical Storm Danielle has formed in the Atlantic Ocean and is expected to become the first hurricane of what has been an unusually quiet storm season, but one that is predicted to become busier than average.

Forecasters at the hurricane center say that as Danielle hovers over an area of warmer-than-average ocean waters in the mid- to north Atlantic, atmospheric conditions are forecast to be favorable for it to strengthen into a hurricane in two days, and peak in intensity in about four days.

But they also forecast it will stay in the middle of the ocean until it weakens back into a tropical depression.

What makes the storm noteworthy is its status as the first hurricane of the season, the fourth named storm, and the first named storm since July 3. There were no named storms during the entire month of August.

The hurricane center reports it’s the first August in 25 years without a named storm. And Colorado State University hurricane researcher Phil Klotzbach told The Associated Press it is the first time since 1941 the Atlantic has gone from July 3 until the end of August with no named storm.

In a separate interview, the head of Indiana University’s Environmental Resilience Institute, Professor Gabriel Filippelli, told the AP two factors have contributed to the quiet season up to this point. First, exceptionally dry air masses in the Atlantic have stripped the atmosphere of the moisture needed for hurricanes and tropical storms to form. Second, there has been a fair amount of shear winds — horizontal winds — that break the structure of developing hurricanes so that they are unable to form.

Last month, even as it revised its seasonal forecast downward, the National Oceanic and Atmospheric Administration’s Climate Prediction Center said atmospheric and oceanic conditions favor an above-normal 2022 Atlantic hurricane season, with the peak months of September and October still ahead.

Filippelli told the AP it remains to be seen if September will see the quiet trend continue or if the hurricane season will pick up steam.

Source: Voice of America