Live anthrax sent to Australia: Officials

2015-05-30 10:55

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Washington - Officials say US authorities investigating the mistaken shipment of live anthrax by a military lab have discovered another batch of the lethal bacteria dating back to 2008, some of which was sent to Australia.

The revelation suggested a wider problem in the handling of anthrax samples, which were supposed to be rendered inactive by irradiation at a US Army facility in Utah.

Military and health officials launched a probe after a commercial lab in Maryland last week found a live sample of anthrax in a shipment from the army's Dugway Proving Ground, near Salt Lake City.

Live anthrax

The Pentagon acknowledged on Thursday that at least 18 government, university and commercial laboratories received suspected live samples of anthrax from a batch irradiated in March 2014.

Samples from that batch were distributed to various labs for research in nine states as well as at the US military's Osan air base in South Korea.

But on Friday, officials said the investigation turned up another batch of live anthrax, which was meant to be made inactive or "dead" in 2008.

It was not clear precisely when samples from the 2008 batch were sent out or where the samples were sent, other than Australia, officials said.

US military and health authorities insisted there was no threat posed to public health and no suspected cases of infection.

Four lab workers in the sates of Texas, Delaware and Wisconsin had been put on antibiotics as a precaution, according to the Centres for Disease Control (CDC).

In addition, 22 military and civilian personnel were also placed under preventative treatment at Osan air base in South Korea, the Pentagon said.

US government laboratories came under fire last year over reports of sloppy management of deadly bacteria.

Powders or food

As a result, health officials suspended the shipment of potentially dangerous pathogens from government labs in Atlanta and the CDC shut down two of its laboratories, including one implicated in the mishandling of anthrax samples.

The lethal anthrax disease is spread by spores and has been used for bioweapons programmes in the United States and elsewhere. Washington long ago scrapped its bioweapons effort as part of an international treaty, which the United States ratified in 1975.

Microscopic anthrax spores can be released without being detected and can be placed in powders or food. In 2001, powdered anthrax spores were found in letters mailed in the United States. Out of 22 people who were infected, five died.

Anthrax spores are deadly unless a patient is promptly treated with large doses of antibiotics.

Read more on:    korea  |  us  |  australia  |  wmd  |  anthrax

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