This could also be a cause: https://www.theguardian.com/media/2021/may/25/influencers-say-russia-linked-pr-agency-asked-them-to-disparage-pfizer-vaccine https:

This could also be a cause: https://www.theguardian.com/media/2021/may/25/influencers-say-russia-linked-pr-agency-asked-them-to-disparage-pfizer-vaccine https://www.theguardian.com/media/2021/may/25/influencers-sa...