OK, so a paper from Nature -
https://www.nature.com/articles/s41564-020-00789-5 - from which I find: "While ADE has been well documented in vitro for a number of viruses, including human immunodeficiency virus (HIV)33,34, Ebola35,36, influenza37 and flaviviruses38, the relevance of in vitro ADE for human coronaviruses remains less clear."
And: "No definitive role for ADE in human coronavirus diseases has been established."
And: "Should it occur, ERD caused by human vaccines will first be observed in larger phase II and/or phase III efficacy trials that have sufficient infection events for statistical comparisons between the immunized and placebo control study arms. Safety profiles of COVID-19 vaccines should be closely monitored in real time during human efficacy trials, especially for vaccine modalities that may have a higher theoretical potential to cause immunopathology (such as inactivated whole-virus formulations or viral vectors)64,65." Which hasn't happened yet...
And: "Preclinical data suggest a low risk of ADE for potently neutralizing mAbs at doses substantially above the threshold for neutralization, which protected mice and Syrian hamsters against SARS-CoV-2 challenge without enhancement of infection or disease81,82."
And: "ADE has been observed in SARS, MERS and other human respiratory virus infections including RSV and measles, which suggests a real risk of ADE for SARS-CoV-2 vaccines and antibody-based interventions. However, clinical data has not yet fully established a role for ADE in human COVID-19 pathology. Steps to reduce the risks of ADE from immunotherapies include the induction or delivery of high doses of potent neutralizing antibodies, rather than lower concentrations of non-neutralizing antibodies that would be more likely to cause ADE."
Not looking good at all for this latest bit of scare-mongering from the Supplement Shills...