Re: Yemen - A Report that Hanta Virus is Infecting Hundreds, Some Deaths
Re: Yemen - A Report that Hanta Virus is Infecting Hundreds, Some Deaths
This now gets very interesting.
First, it is clear the illness under suspicion is HFRS, not HPS. HPS is a severe respiratory illness, and that just isn't the symptoms reported. Moreover, HPS has been found almost exclusively in the Americas, whereas HFRS is more qidespread in Asia.
Secondly. there are many hantaviruses that cause HFRS. The original one discovered in Korea is the Hantaan virus mentioned in the first post of this thread, and for which the genus Hantavirus is named. Whether it is the specific hantavirus involved in the outbreak is unclear. It's native region is China and Korea, quite far from the location of this outbreak. It would require serious explanation as to how it got to Yemen. There are several other hantaviruses that cause HFRS, including Pumala and Seoul viruses, although none have been reported from the Middle East, as far as I am aware. It is possible that this is a newly discovered member of this family, as the hantavirus family is already known to be spread worldwide.
Thirdly, there is a LOT of dengue in that area, which may have been masking this outbreak for much of the past two years, thus resulting in the delay in diagnosis. The earliest reports of a mystery hemorrhagic fever in Hodeidah date to August 2009. An article from November 2010 indicates that of 10 samples taken at random, six came back positive for dengue. It actually is a bit of a miracle that HFRS was diagnosed here as there were many other hemorrhagic fevers that might have been more likely geographically (CCHF, RVF, Alkhurma).
This should be sent to ProMED. It should be very interesting to see their commentary.
Re: Yemen - A Report that Hanta Virus is Infecting Hundreds, Some Deaths
This now gets very interesting.
First, it is clear the illness under suspicion is HFRS, not HPS. HPS is a severe respiratory illness, and that just isn't the symptoms reported. Moreover, HPS has been found almost exclusively in the Americas, whereas HFRS is more qidespread in Asia.
Secondly. there are many hantaviruses that cause HFRS. The original one discovered in Korea is the Hantaan virus mentioned in the first post of this thread, and for which the genus Hantavirus is named. Whether it is the specific hantavirus involved in the outbreak is unclear. It's native region is China and Korea, quite far from the location of this outbreak. It would require serious explanation as to how it got to Yemen. There are several other hantaviruses that cause HFRS, including Pumala and Seoul viruses, although none have been reported from the Middle East, as far as I am aware. It is possible that this is a newly discovered member of this family, as the hantavirus family is already known to be spread worldwide.
Thirdly, there is a LOT of dengue in that area, which may have been masking this outbreak for much of the past two years, thus resulting in the delay in diagnosis. The earliest reports of a mystery hemorrhagic fever in Hodeidah date to August 2009. An article from November 2010 indicates that of 10 samples taken at random, six came back positive for dengue. It actually is a bit of a miracle that HFRS was diagnosed here as there were many other hemorrhagic fevers that might have been more likely geographically (CCHF, RVF, Alkhurma).
This should be sent to ProMED. It should be very interesting to see their commentary.