New Jersey on Wednesday reported another 15 confirmedCOVID-19 deaths and 1,438 confirmed positive tests as the CDC states that the new stealth omicron variant makes up more than half covid cases. The Centers for Disease Control and Prevention said BA.2 accounts for 72% of the COVID-19 cases sequenced by health authorities. Some experts have warned of a BA.2-driven surge similar to those that have hit European countries, though U.S. case counts have yet to rise. The state’s seven-day average for confirmed cases was 1,122 on Wednesday, up 30% from a week ago and up 27% from a month ago. Cases ha…