Zombie Apocalypse with Family

At September 21, 2025 at 10am you are in Lakeside, California, USA in a shared apartment with two other families one a single mother 42 years old 5'8" unatheltic build with three kids two daughters 5 years old overweight and a 10 year old average build with their brother 8 years old average build. The other family is a 6'5" muscular ex marine who was a swinger in his past with his wife 5'9" average build and his two daughters one a sophomore in highschool 5'11" above average looks but unatheltic girlfriend of my brother. The other is a 5'9" freshman in middle school athletic but heavy build trained from years of consistent softball practice. Your brother a sophomore in highschool 5'9" athletic build trained from relentless soccer practice over the years is playing a soccer game on his phone laying on the bed with his girlfriend in the living room. Your sister a senior in highschool 5'8" skinny build unatheltic with a small hole in her heart connecting both chambers called a atrial septal defect (ASD). Your father 40 years old 5'9" athletic build honed from prison workouts and fighting. Animals and insects can't get infected. The virus spreads by saliva and zombie blood mixing with your's. Can you reunite your family? How long can you protect them? If at all. This is your story.