A third dose of Pfizer’s COVID-19 vaccine neutralizes the Omicron variant of the coronavirus that’s caused global alarm over the past two weeks, the drugmaker said Wednesday.

Pfizer and its German partner BioNTech said that preliminary results of a laboratory study show a booster dose of the vaccine “provides a similar level of neutralizing antibodies to Omicron as is observed after two doses against” the original virus “and other variants that emerged before Omicron.”

The companies did not release the full preliminary data that led to their findings, opting instead to only issue a press release. That means the data has not been reviewed by any impartial third-party scientists and it’s unclear when more complete data will be available.