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" ... Despite these advantages, clinical trials for the AstraZeneca vaccine have been plagued by starts and stops. Last fall, all global phase 3 clinical trials of the vaccine were suddenly halted after a patient in the U.K. showed symptoms of a serious neurological disorder called transverse myelitis. After a 45-day pause, the trial resumed in the U.S., but the delay put AstraZeneca more than a month behind its competitors. ... "
" ... More cause for concern are the reports of at least two cases of transverse myelitis, which caused two pauses in the AstraZeneca vaccine trials. The most recent pause was reversed in some countries but not in the US. ... "
" ... The mysterious and frightening “polio-like” illness, acute flaccid myelitis, lit up headlines in mid-October when the Centers for Disease Control and Prevention (CDC) announced that 62 cases had been diagnosed across 22 states. ... "