CARROLLTON, Texas (CBSDFW/COM/AP) – A surprise birthday party that resulted in 18 people testing positive for the coronavirus has left a North Texas man horrified as his father continues to fight for his life in a hospital intensive care unit.

Ron Barbosa, who is married to a doctor and refused to attend the May 30 party for his daughter-in-law because of safety concerns amid the COVID-19 pandemic, said those hospitalized included his parents, both in their 80s, and his sister, who is also battling breast cancer.

Barbosa said his nephew, unknowingly infected with the virus, hosted last month’s gathering of 25 people that only lasted a few hours and followed the state’s latest health standards. During the party, he said the nephew interacted with seven relatives, who subsequently contracted the virus and spread it to 10 other family members, including two young children.

Gov. Greg Abbott on Thursday said Texas would halt its aggressive reopening as it deals with a surge in coronavirus cases and hospitalizations that has made the state a virus hot spot.

Statewide, the number of COVID-19 patients has more than doubled in two weeks.

Texas has reported more than 11,000 new cases in the previous two days alone.

Barbosa’s mother, Carole, who stopped by the function to drop something off, tested positive for coronavrius June 6 and was admitted to the hospital a week later.

Barbosa said his father, Frank, who didn’t attend the get-together but later contracted COVID-19, was hospitalized June 17. He said his dad is currently “hanging on by a thread” in the ICU while on life support.

Frank received a plasma donation Wednesday from a recovered coronavirus patient, according to Barbosa’s Facebook page. Barbosa said he hopes the procedure will save his dad’s life.

“Prayers were answered today,” Barbosa wrote on Facebook. “Now he (Frank) needs to get well for mom and the Barbosa Family.”

Barbosa said his family remains united despite feeling a pendulum of emotions, including anger, over the past few weeks.

“We were horrified. People couldn’t believe that they took it to a family member,” he said. “But now, we’re holding on together.”

Carole has returned home to recover, according to a Facebook page the family created, which indicated that Barbosa’s sister, Kathy, has been feeling better and is back home to recuperate.

(© Copyright 2020 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)