Several new locations opened Tuesday, but those sites are already being inundated and seeing long lines.
Chopper 6 was over the scene of a newly opened testing site in Gloucester County, New Jersey.
The line stretched block after block in Clayton.
"I was at a gathering and I started feeling symptoms yesterday. So, I felt like it was safe to get tested," said Annie Cuneo of Blackwood.
In Philadelphia's Rhawnhurst neighborhood, a mobile testing location at the Roosevelt Mall also experienced long lines.
"We were somewhere over Christmas Eve and somebody tested positive," said Migdalia Dancel of Juniata Park. "I'm hoping the symptoms we're having is just a cold but we just want to be sure."
Organizers at the site said so many people were waiting by the time it opened at 9 a.m. that they had to stop more from getting in line. Organizers told them to try to find another testing site.
This was one of the city's walk-up sites where no appointments are needed.
The Philadelphia Department of Public Health opened another mobile COVID-19 testing site at the Center for Excellence along Limekiln Pike in the city's Cedarbrook section.
The CDC recommends vaccinated people get tested five to seven days after a known exposure. People who are unvaccinated should test right away, then test again in about five days.
Here is a list of resources to find an available COVID-19 testing site near you:
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