University of Zagreb starts second larger research of muscle twitches and migraines after BNT162b2 mRNA Vaccine due to an overwhelming response - here is an email I received from researchers.

Back 6 months ago I contacted authors of this study ( and they came back with expanded research attempt contacting people with similar issues considering an overwhelming response. Here is an email:

Dear Mr. Nick Shulhin,

I am writing to you because you had previously contacted prof. Grgurevic regarding your symptoms.
In January 2021, we published a case report titled "Benign Fasciculation Syndrome and Migraine Aura without Headache: Possible Rare Side Effects of the BNT162b2 mRNA Vaccine? A Case Report and a Potential Hypothesis" (Vaccines 2022, 10(1), 117) after which we recieved a substantial amount of e-mails and messages from people all over the world reporting similar phenomena.Prompted by a large number of e-mails, we wish to counduct a small study in which we will kindly ask those that wrote to us reporting these phenomena to fill out a self-reported questionnaire which we created in order to learn more about these phenomena. We plan to publish these results as a follow-up to our case report.
I am including the informed consent form and the link to the questionnaire via Google Docs.
If you have any questions regarding the study, please let me know.
Please, if you would like to participate, please read and sign the informed consent form and then fill out the questionnaire.  .
Thank you.

Best regards,
Grgur Salai, MD
Department of Pulmonology,
University Hospital Dubrava,
Zagreb, Croatia