Two more Texas lawmakers who left their state to hobble efforts to pass voting restrictions have tested positive for the coronavirus, raising to five the number of infected people in the delegation.

State representative Trey Martinez Fischer of San Antonio said in a statement he had tested positive.

“I am quarantining until I test negative, and I am grateful to be only experiencing extremely mild symptoms,” he said.

“When my Texas House Democratic colleagues and I broke quorum to stop anti-voter legislation, we knew that tactic would come with real personal sacrifice.

“Just as these new variants sweeping the country are more aggressive than ever, the wave of anti-voter legislation in this country is worse than we’ve seen in generations. That’s why, I will continue the fight for voting rights with every single fiber of my being.”

A person familiar with the delegation told the Associated Press the number of infected members had risen to five. The person was not authorized to discuss the matter and requested anonymity.

More than 50 Texas lawmakers traveled to Washington last Monday aboard a private charter flight. A caucus official has said all had been vaccinated. The Centers for Disease Control and Prevention says “breakthrough” infections – vaccinated people becoming infected – are rare.

After a photo showed the Democrats maskless on the plane, Republicans and others criticized the lawmakers for traveling without masks. But federal guidelines don’t require masks to be worn on private aircraft.

“That is the beauty of being vaccinated,” said another state representative, Gene Wu. “Every single person who has tested positive so far have little to no symptoms, which is the point of the vaccine. If nothing else, we want this to be a reminder to all Americans: get your stupid shot now.”

Kamala Harris, who met last week with members of the Texas delegation, went to Walter Reed military hospital on Sunday for a routine doctor’s appointment, a White House official said. No other information was released, and the White House did not respond to questions about Harris’ the vice-president’s visit.

After some of the lawmakers tested positive for the virus, Harris’ spokesperson said Harris and her staff were not at risk of exposure because they were not in close contact with those who tested positive and added that the vice-president and her staff were fully vaccinated.

The Democrats fled the state to deny the Republican-controlled legislature the necessary quorum to pass the voting laws.