Saturday, August 01, 2015 8:43:05 AM
By MARIA CHENG 18 hours ago
FILE - In this March 7, 2015 file photo, a health worker, right, cleans a man's arm before injecting him with a Ebola vaccine in Conakry, Guinea. An experimental vaccine tested on thousands of people in Guinea exposed to Ebola seems to work and might help shut down the ongoing epidemic in West Africa, according to interim results from a study published Friday, July 31, 2015. There is currently no licensed treatment or vaccine for Ebola, which has so far killed more than 11,000 people in West Africa since the world’s biggest outbreak began last year. (AP Photo/ Youssouf Bah, File)
LONDON (AP) — An experimental Ebola vaccine tested on thousands of people in Guinea seems to work and might help shut down the waning epidemic in West Africa, according to interim results from a study published Friday.
There is currently no licensed treatment or vaccine for Ebola, which has so far killed more than 11,000 people in West Africa since the world's biggest outbreak began in the forest region of Guinea last year. Cases have dropped dramatically in recent months in the other two hard-hit countries, Sierra Leone and Liberia.
"If proven effective, this is going to be a game-changer," said Dr. Margaret Chan, Director-General of the World Health Organization, which sponsored the study. "It will change the management of the current outbreak and future outbreaks."
Scientists have struggled for years to develop Ebola treatments and vaccines but have faced numerous hurdles, including the sporadic nature of outbreaks and funding shortages. Many past attempts have failed, including a recently abandoned drug being tested in West Africa by Tekmira Pharmaceuticals.
The study involved several thousand people who had been near a new Ebola patient or a close contact of one. They were randomly assigned to get the vaccine right away or in three weeks.
Researchers started tracking results 10 days after they set up the groups to give time to weed out any people who might have been silently harboring the virus when the study began.
After that point, none of the people in the group that had been assigned to get the vaccine right away developed Ebola, versus 16 people in the group eligible to get the vaccine after 21 days.
The vaccine, developed by the Canadian government, has since been licensed to Merck & Co. but has not yet been approved by regulators. The study results were published online Friday in the journal Lancet.
At the moment, officials think the vaccine would only be used once an outbreak starts, to protect those at high-risk; there are no plans to introduce mass vaccination campaigns like those for measles or polio or to create huge stockpiles of the shots.
Merck, based in Kenilworth, New Jersey, noted its vaccine is in what is normally the final round of human testing in Sierra Leone, and in mid-stage testing in Liberia.
Merck will manufacture the vaccine if it's approved for use outside patient studies. In late-morning trading in the U.S., Merck shares were up 62 cents, or 1.1 percent, at $59.13.
Last December, Gavi, the vaccine alliance, said it would spend up to $300 million buying approved Ebola vaccines. The private-public partnership, which often buys immunizations for poor countries, said Friday that it "stands ready to support the implementation of a WHO-recommended Ebola vaccine."
An expert group monitoring the study's data and safety recommended the trial be stopped on July 26 so that everyone exposed to Ebola in Guinea could be immunized.
The vaccine uses an Ebola protein to prompt the body's immune system to attack the virus.
"It looks to be about as safe as a flu vaccine," said Ben Neuman, a virologist at the University of Reading who was not part of the trial. Researchers are still assessing possible side effects; the most serious seemed to be fever and the stress experienced by patients who believe such symptoms were due to Ebola.
"This (vaccine) could be the key that we've been missing to end the outbreak," Neuman said. "I don't see any reason on humanitarian grounds why it should not be used immediately." He said further tests would be necessary to see if the vaccine might also protect pregnant women, children and adolescents; those trials are already under way. It's also uncertain how long protection might last.
WHO vaccines expert Marie-Paule Kieny said having an effective vaccine might avert future disasters but added it would still take months to get the shot approved by regulators.
"Using a tool like this vaccine, we would be able to stop the epidemic from going really wild and spreading further," she told reporters, noting that stamping out future outbreaks still depends on early detection. WHO first identified Ebola in Guinea last March but did not declare the epidemic to be a global emergency until August, when the virus had killed nearly 1,000 people.
Other Ebola vaccines are being studied elsewhere but the declining caseload is complicating efforts to finish the trials.
___
This story has been corrected to say patients in the study got the delayed vaccination after 21 days instead of 10.
___
AP Business Writer Linda A. Johnson in Trenton, N.J. contributed to this report.
___
Online:
http://www.thelancet.com/pb/assets/raw/Lancet/pdfs/S0140673615611175.pdf
________________________________________________________________
Big Pharma and Canada wins in Ebola.
Echo20
Recent NNVC News
- Form 8-K - Current report • Edgar (US Regulatory) • 08/09/2024 08:30:39 PM
- Form 424B5 - Prospectus [Rule 424(b)(5)] • Edgar (US Regulatory) • 08/09/2024 08:05:25 PM
- NanoViricides Reports that the Phase I NV-387 Clinical Trial is Completed Successfully and Data Lock is Expected Soon • InvestorsHub NewsWire • 05/02/2024 02:07:42 PM
- Form 8-K - Current report • Edgar (US Regulatory) • 02/16/2024 09:53:32 PM
- Form 10-Q - Quarterly report [Sections 13 or 15(d)] • Edgar (US Regulatory) • 02/14/2024 09:55:35 PM
- Form 8-K - Current report • Edgar (US Regulatory) • 01/19/2024 09:44:48 PM
- Form DEF 14A - Other definitive proxy statements • Edgar (US Regulatory) • 12/04/2023 09:08:49 PM
- Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405] • Edgar (US Regulatory) • 10/13/2023 08:30:41 PM
- Form NT 10-K - Notification of inability to timely file Form 10-K 405, 10-K, 10-KSB 405, 10-KSB, 10-KT, or 10-KT405 • Edgar (US Regulatory) • 09/28/2023 08:44:54 PM
VHAI - Vocodia Partners with Leading Political Super PACs to Revolutionize Fundraising Efforts • VHAI • Sep 19, 2024 11:48 AM
Dear Cashmere Group Holding Co. AKA Swifty Global Signs Binding Letter of Intent to be Acquired by Signing Day Sports • DRCR • Sep 19, 2024 10:26 AM
HealthLynked Launches Virtual Urgent Care Through Partnership with Lyric Health. • HLYK • Sep 19, 2024 8:00 AM
Element79 Gold Corp. Appoints Kevin Arias as Advisor to the Board of Directors, Strengthening Strategic Leadership • ELMGF • Sep 18, 2024 10:29 AM
Mawson Finland Limited Further Expands the Known Mineralized Zones at Rajapalot: Palokas step-out drills 7 metres @ 9.1 g/t gold & 706 ppm cobalt • MFL • Sep 17, 2024 9:02 AM
PickleJar Announces Integration With OptCulture to Deliver Holistic Fan Experiences at Venue Point of Sale • PKLE • Sep 17, 2024 8:00 AM