Conn. (WTNH) — With the state’s COVID-19 test positivity rate over the past seven days above 5%, health experts are watching the BA.2 variant become more dominant here, like other states including New Jersey and New York.

“They don’t seem to be rising as quickly as they were during the omicron surge. So hopefully with vaccinations and boosters and the people, a lot of people that got omicron during the last surge, we’re hoping the impact will be more limited,” said Dr. Albert Shaw, a Yale Medicine infectious diseases physician.

Shaw urges people to get their first booster if they have not. He reminds people that the boosters still do a very good job of protecting people from the serious outcomes of COVID-19 like hospitalizations and death.

When asked why some people who are exposed to COVID do not contract the virus, he said the reasons are diverse.

“There can be some individuals that may even have had COVID because there are a lot of asymptomatic infections and so combined with the effects, hopefully of vaccination, they have some protection they didn’t know about,” Shaw said.

He said it is also possible that some people have immune cells from other types of coronavirus infections that can cause mild common cold symptoms and develop a generic variation to protect them.

WEB EXTRA: Dr. Albert Shaw, a Yale Medicine infectious diseases physician, discusses these topics

Shaw weighed in on households dropping or keeping COVID protocols as most of the public has opened up.

“I think it’s still totally fine to continue to wear a mask, particularly in indoor settings where we don’t know the vaccination status of those around us, and particularly as we’re entering kind of an unknown phase of increased BA.2 transmission,” Shaw said.

According to the Connecticut Department of Public Health, COVID cases in the City of New Haven have gone up by 169 since last Friday, just slightly ahead of Greenwich and Stamford, all three leading the state.