Showing posts with label transmission. Show all posts
Showing posts with label transmission. Show all posts

Tuesday, September 30, 2014

First Ebola Case Outside Africa in the USA

September 30, 2014 0 Comments
Today, the first case of Ebola outside of the continent of Africa has been confirmed from Texas in the United States of America. The Center for Disease Control  (CDC) provided an announcement and confirmation about the case today at:

First Imported Case of Ebola Diagnosed in the United States

The announcement concludes with

"CDC recognizes that even a single case of Ebola diagnosed in the United States raises concerns. Knowing the possibility exists, medical and public health professionals across the country have been preparing to respond. CDC and public health officials in Texas are taking precautions to identify people who have had close personal contact with the ill person and health care professionals have been reminded to use meticulous infection control at all times.

We know how to stop Ebola’s further spread: thorough case finding, isolation of ill people, contacting people exposed to the ill person, and further isolation of contacts if they develop symptoms. The U.S. public health and medical systems have had prior experience with sporadic cases of diseases such as Ebola. In the past decade, the United States had 5 imported cases of Viral Hemorrhagic Fever (VHF) diseases similar to Ebola (1 Marburg, 4 Lassa). None resulted in any transmission in the United States."
Only time will tell how successful the CDC and local public health officials are at identifying and containing other individuals that may have been infected by the index case here in the United States.

Wednesday, August 20, 2014

Searching for the Animal Reservoir(s) of MERS-CoV

August 20, 2014 0 Comments

The World Organisation for Animal Health (OIE), organized in the 1920s, is an international organization of member countries established to promote global transparency of animal diseases, to collect scientific information relating to international animal disease control, and to develop standards for international trade of animals and animal products. The OIE is also tasked with disseminating information about emerging zoonotic diseases that have the potential for transmission to humans.

Recently, the OIE provided a summary of its current understanding of the Middle East Respiratory Syndrome Coronavirus (MERS-CoV) in Update August 2014 - Questions & Answers on Middle East Respiratory Syndrome Coronavirus (MERS-CoV). This update provides general information about the MERS-CoV, but also has a detailed discussion about potential animal reservoirs for this coronavirus.

Several patterns or mode of human transmission of MERS have been identified by the World Health Organization. Human MERS infections can be transmitted in hospital settings and through close human to human contact. Both of these transmission settings require an infected individual. It is uncertain how the initial MERS cases in these situations became infected. These sporadic or community acquired infections could result from an environmental source or direct or indirect contact with animals.

The OIE points out that there is strong evidence that camels may be an animal host for this coronavirus, but perhaps not the only host. A number of confirmed MERS human cases had contact with camel or exposure to camels or camel products prior to infection. But not all sporadic MERS cases can be linked to camel or camel product exposure. The OIE specifically states “there remains the possibility that other animal species may be involved in the maintenance and transmission of the MERS-CoV”. The OIE concludes that more scientific research is necessary to determine whether other animal species, besides camels, may represent primary or intermediate hosts for MERS-CoV.

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