GENEVA, October 21. /TASS/. The clinical trials of perspective vaccines against the Ebola virus in coordination with the World Health Organization (WHO) are due to begin in Switzerland by November 1, WHO Assistant Director-General Marie Paule Kieny told journalists on Tuesday.

The trials are set to start in Switzerland’s Lausanne late this month or on the first day of the next month. A total of 125 volunteers are to be injected two various doses of chimpanzee-based adenovirus vaccine, she said.

Clinical tests of this vaccine are already underway in the United States, the United Kingdom and Mali, in West Africa.

Simultaneously, Geneva is due to carry out clinical trials of a second vaccine, containing a recombinant vesicular stomatitis virus. Five various doses of the vaccine are to be tested in Geneva. The trials will also involve 125 volunteers.

These tests will last for between 6 months and one year, but the first results on their safety and antigenicity will be ready in December. If the vaccine proves to be successful, it will be delivered to the West African states in January 2015.

Kieny said there is yet no talk of a massive vaccination. Some 10,000 people are expected to be vaccinated, she added.

The World Health Organization (WHO) reported last week that the Ebola epidemic was spreading geographically and the death toll exceeds 4,500, while the number of probable and suspected cases nears 9,000.