Science

EUROSURVEILLANCE by I. Goodfellow, C. Reusken, and M. Koopmans  

  March 26, 2015                                                              

The Ebola virus epidemic in West Africa is on the brink of entering a second phase in which the (inter)national efforts to slow down virus transmission will be engaged to end the epidemic. The response community must consider the longevity of their current laboratory support, as it is essential that diagnostic capacity in the affected countries be supported beyond the end of the epidemic.

The emergency laboratory response should be used to support building structural diagnostic and outbreak surveillance capacity.

SCIENCE NEWS  by Ashley Yaeger                                                      March 26, 2015

(Scroll down for full study.)

The virus causing the current Ebola epidemic in West Africa is not evolving as quickly as some scientists had suggested.

REGULAR RATE  A genetic analysis suggests that the Ebola virus, shown here in orange, is not evolving as fast as expected.

In a paper last August, researchers reported that the virus (Zaire ebolavirus) was altering its genes almost twice as fast as it had during previous Ebola outbreaks in Central Africa (SN: 9/20/14, p. 7). However, a new genetic analysis shows that the virus is mutating at roughly the same rate as in past outbreaks, researchers report online March 26 in Science. The finding suggests the virus has not become more virulent or transmissible during the West Africa outbreak.

SCIENCE By Kai Kupferschmidt                                                                       March 11, 2015

Researchers in Sierra Leone today started a new phase II trial of an experimental drug in Ebola patients. The first participant received an injection of the therapeutic, called TKM-Ebola, this morning at an Ebola treatment unit in Kerry Town. The trial may expand to other sites; the study team hopes to have an answer fast so that it can either move on to another drug or start a phase III study of TKM-Ebola.

Produced by Tekmira Pharmaceuticals in Burnaby, Canada, TKM-Ebola is made of synthetic, small interfering RNAs packaged into lipid nanoparticles. The RNAs target three of Ebola’s seven genes, blocking the virus’s replication. TKM-Ebola has been shown to work well in monkeys; the efficacy trial in humans is only starting now because there was not enough of the drug available earlier. Also, the RNAs have been adapted to the strain circulating at the moment.

The study does not have a placebo arm; all patients at the trial site are eligible for the drug, and researchers hope to determine whether it works by comparing them with patients treated elsewhere.

REUTERS                                                           Feb. 26, 2015

Diagnostics company Corgenix Medical Corp said on Thursday U.S. health regulators had approved its rapid Ebola test for emergency use, in response to the world's worst outbreak of the virus that killed more than 10,000 so far.

The company's ReEBOV Antigen Rapid Test, which involves putting a drop of blood on a paper strip and waiting for at least 15 minutes for a reaction, was cleared by the World Health Organization last week.

The test is less accurate than the standard test, which has a turnaround time of 12-24 hours, but is easy to perform and does not require electricity. It is able to correctly identify about 92 percent of Ebola-infected patients and 85 percent of those not infected with the virus, the WHO said.

The WHO is still assessing four or five other rapid test candidates.

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http://www.reuters.com/article/2015/02/26/us-health-ebola-testing-idUSKBN0LU1OO20150226