Virus blamed for Atlantic dolphin deaths

2013-08-28 10:05


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Washington - A dolphin virus that is similar to measles in humans is suspected of causing the deaths of hundreds of Atlantic bottlenose dolphins since July, US officials said on Tuesday.

Morbillivirus affects the lungs and the brain, causing pneumonia and abnormal behaviour, and is often fatal, experts at the National Oceanic and Atmospheric Administration said.

"Many dolphins have presented with lesions on their skin, mouth, joints, or lungs," NOAA said in a statement.

Nine times the average number of dolphins have washed up along the shores of the East Coast this summer, in what NOAA described as an "unusual mortality event", or UME.

"The tentative cause of the UME is being attributed to cetacean morbillivirus, based upon preliminary diagnostic testing and discussion with disease experts," said NOAA.

"To date 100% (27 of 27) of dolphins tested are suspect(ed) or confirmed positive for morbillivirus."

Viruses in the same family can cause measles in humans, canine distemper in dogs and wolves and rinderpest in cattle, NOAA said.

The virus typically spreads "through inhalation of respiratory particles or direct contact between animals, including mothers and calves", NOAA said.

Other mass die-offs linked to morbillivirus have afflicted bottlenose dolphins in the north-eastern US in 1987 - 1989 and the Gulf of Mexico in 1992 and 1994.

A total of 488 bottlenose dolphins have been stranded so far this year along the coast from New York to North Carolina, compared to 167 last year, NOAA said.
Read more on:    noaa  |  marine life

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