Your task is to predict the verdict of a claim based on the provided question-answer pair evidence. The possible labels are: 'Supported', 'Refuted', 'Not Enough Evidence', 'Conflicting Evidence/Cherrypicking'. Justify your answer using the provided evidence and select the correct label.

Claim: Russia has successfully developed a vaccine for Covid-19 and it has passed all checks.

Q1: Who has developed this vaccine?
A1: ‘Sputnik V’ has been developed by Moscow-based Gamaleya Research Institute of Epidemiology and Microbiology.

Q2: When was it first registered?
A2: It was registered by the Russian health ministry on August 11 as the first registered Covid-19 vaccine in the market but The certificate mentions that “the vaccine cannot be used widely until 1 January 2021”, presumably after larger clinical trials are completed.

Q3: What kind of vaccine is it?
A3: The Russian vaccine is an “adenovirus vector-based vaccine”.

The idea is to use the weakened common cold virus to stimulate an immune response and trigger the formation of antibodies against Covid-19. These anti-bodies are then ready to fight against Covid-19 in case one catches a coronavirus infection. Even the widely awaited Oxford University vaccine is exploring the same route.

Q4: Has it been thoroughly tested?
A4: No, because First, the vaccine has been approved even before the vital Phase 3 trial started on August 12. According to the ‘Sputnik V’ website, “Phase 3 clinical trial involving more than 2,000 people in Russia, a number of Middle Eastern (UAE and Saudi Arabia), and Latin American countries (Brazil and Mexico) will start on August 12. Mass production of the vaccine is expected to start in September 2020.”

The website also says that “emergency rules adopted during the Covid-19 pandemic can be used to vaccinate the population in Russia”.

Q5: Has it been tested for safety?
A5: No, because The second problem is that even for the just-concluded Phase 2 of trial, the sample size was too small for fair evaluation about the safety and efficacy. All the data about the testing has not been made public yet. According to “Science” magazine, so far, it has only been tested on 76 people in total
user
justification: It seems from the 4th and 5th QAs that the vaccine has not passed the safety checks. Therefore, the claim is refuted

verdict: 'Refuted'
assistant