"The FDA is continuing its scientific investigation to determine if there is a direct link between the use of e-cigarettes and the risk of seizures or other neurological symptoms," said Dr. Ned Sharpless, acting FDA commissioner.
The FDA said the reported cases occurred between 2010 and 2019, and in addition to seizures, some people reported fainting or trembling. Sharpless said "we still don't have enough information to determine if e-cigarettes are causing these reported incidents," but urged the audience to continue submitting reports.
Additional information "can help us identify common risk factors and determine if specific e-cigarette product characteristics, such as nicotine content or formulation, are more likely to contribute to seizures," he said.
been 92 new reports since then, but the FDA did not announce any clear pattern across the cases.
Cases were reported in both first-time and experienced e-cigarette users, and "seizures have been reported to occur after a few puffs or up to a day after use," the FDA said in April. Several people had previously had a seizure diagnosis, the agency said at the time, and a few had also used other drugs such as marijuana.
"It is important that health care professionals, consumers, parents, teachers and other affected adults, as well as adolescents and young adult users, report in detail information on any past or future incidents of e-cigarette seizures to the FDA," he said. Sharpless.
"We are committed to closely monitoring this issue and taking additional measures necessary to protect the public, especially our nation's youth, from the dangers of e-cigarettes and other tobacco products," he added.
 CNN's Michael Nedelman contributed to this report.