Parents in Washington state may soon no longer be able to cite personal or philosophical reasons for not vaccinating their children for the measles virus after the passage of a bill by the state Senate on Wednesday.

The measure eliminating the exception was passed 25-22, allowing it to go before the House where it is also expected to be approved. It will then be presented to Gov. Jay Inslee (D), who is expected to sign it into law.

The measure was passed last month by the House but was then amended by a Senate committee, requiring it to undergo another House vote.