Hugo López-Gatell, Undersecretary for Health Promotion, said that it is very common for a vaccine study to be suspended after an adverse reaction, after it became known that this happened with the study by AstraZeneca and the University of Oxford for the COVID-19 vaccine.
“The news is real,” López-Gatell said when asked by reporters. He said that until now it is unknown if there is an association between the application of the vaccine and the adverse reaction and also stated that it is not yet clear how long the studies will stop.
The Undersecretary of Health also called, at the same time, not to speculate on the subject.
This Tuesday, AstraZeneca canceled the tests it was conducting on the COVID-19 vaccine, in the hands of the University of Oxford, due to a “serious” adverse reaction.
One of the participants suffers from “a potentially inexplicable illness,” a company spokesperson told US media on Tuesday.
“This is a routine action that happens whenever there is a potentially unexplained disease in one of the trials while it is being investigated, ensuring that the integrity of the studies is maintained,” the spokesperson told CNBC and Stat.
The company’s “standard review process caused a pause in vaccination to allow review of safety data,” the spokesperson also noted.
The spokesperson – according to Stat News – described the pause as “a routine action that should happen whenever there is a potentially unexplained illness, while it is investigated, ensuring that we maintain the integrity of the trials.” The spokesperson also said the company is “working to accelerate the review of the one-time event to minimize any potential impact on the testing schedule.”