Merck announced an Ebola vaccine. It flat out does not work and can never work. The first thing the Ebola virus does is to eat the immune system, and whether it's trained by a vaccine doesn't matter.
https://investors.merck.com/news/press-release-details/2019/Merck-Announces-FDA-Approval-for-ERVEBO-Ebola-Zaire-Vaccine-Live/default.aspx

Let's look at what some of the things they mention in the press release:

"Limitations of Vaccine Effectiveness
Vaccination with ERVEBO may not protect all individuals. Vaccinated individuals should continue to adhere to infection control practices to prevent Zaire ebolavirus infection and transmission"

"The duration of protection conferred by ERVEBO is unknown."

"The safety and effectiveness of ERVEBO have not been assessed in immunocompromised individuals. The effectiveness of ERVEBO in immunocompromised individuals may be diminished. The risk of vaccination with ERVEBO, a live virus vaccine, in immunocompromised individuals should be weighed against the risk of disease due to Zaire ebolavirus."

"Vaccine virus RNA has been detected by RT-PCR in blood, saliva, urine, and fluid from skin vesicles of vaccinated adults. Transmission of vaccine virus is a theoretical possibility."

Vaccine derived Ebola? Fantastic.

"The total number of subjects vaccinated with ERVEBO in double-blind, placebo-controlled trials was 1,712 and in open label trials was 13,687."

"Arthritis (including events of arthritis, joint effusion, joint swelling, osteoarthritis, monoarthritis or polyarthritis) was reported to occur in 0% to 24% of subjects"

"In one study conducted in Switzerland (Study 5, NCT02287480), 102 subjects received ERVEBO or a lower dose formulation. In this study, arthritis was reported to occur in 24% of subjects and severe arthritis, defined as preventing daily activity, in 12% of subjects."

"Decreases in lymphocytes were reported in up to 85% of subjects"

"There are no adequate and well-controlled studies of ERVEBO in pregnant women"

This shot used to be called Mil-77. Why do they need high dose vit C (now called Marik's protocol after paul Marik's 2017 discovery of a compete and absolute cure for sepsis) as well?

British nurse cured of Ebola credits new drug - and strawberries "Back in Britain, the decision to try MIL 77 was not difficult. “I said ‘I have Ebola, so, yes, I’d rather have that than high-dose vitamin C,’” she said" "“I reckon I’ve had 10 punnets,” joked Corporal Anna Cross, who smiled nervously as she talked for the first time after her treatment at the Royal Free Hospital in north London." (10 punnets would be about equal to two 1000mg injections a day)
http://www.telegraph.co.uk/news/worldnews/ebola/11499584/Nurse-who-became-first-in-world-to-be-cured-of-Ebola-by-experimental-drug-is-discharged.html