Stefanos Tsitsipas plays with Gael Monfils at the Indian Wells Masters earlier this month
British number two Jordan Thompson has urged the ATP to outlaw the use of several vaccine drugs during the season.
World number nine Stefanos Tsitsipas refused to take one two weeks ago because it was not compulsory on tour.
It was only lifted because he had already played a tournament in Houston that month.
“I’m really disappointed for the Australian Open fans to witness this week’s major controversy and drama,” Thompson said.
Tsitsipas, 19, was given the life-saving vaccine to prevent infection from dengue fever but chose not to because it was only recommended for use at the start of the season.
“It’s been found now to be obviously much more important to take the vaccine the previous month, around the time of the Australian Open,” said Thompson.
“The more I get involved in this the more concerned I get.
“I believe that eventually when it gets to the point where all the tournaments are not allowing players to play with these vaccines then they will change their rules because it’s also in the best interests of the tour.
“I don’t believe it’s fair that world number nine takes one and everyone else takes the other but then not the same.
“Why should one player get special treatment?”
Tennis governing body and major tournament organisers are heavily criticised after Novak Djokovic and Andy Murray pulled out of the Australian Open in 2015 during the tournament due to the Zika virus.
The eight top players in the world had also taken action to avoid the disease, which has been linked to birth defects and serious illness in adults.
WTA rules state players are expected to follow the recommendations of the state or country in which they are playing.