When Dr. Natalia Solenkova woke up Monday morning, she was greeted with a flood of Twitter notifications on her phone. The Miami critical care physician had hundreds of new followers, and they, along with thousands of others on Twitter, were angry with her. In tweets, comments and direct messages across Twitter and other social platforms, strangers demanded to know why she had deleted a tweet that read: “I will never regret the vaccine. Even if it turns out I injected actual poison and have only days to live. My heart and is was in the right place. I got vaccinated...