SANTA ANA—January became the deadliest month for COVID-19 in Orange County Feb. 9 with 33 more fatalities logged, but all of the other indicators such as case and positivity rates continued a downward trend. The adjusted daily case rate per 100,000 people dropped from 39 last Feb. 9 to 29.7, and the test positivity rate on a seven-day average, with a seven-day lag, dropped from 10.9 percent last week to 9.4 percent. The county’s Health Equity Quartile Positivity Rate, which measures the cases in highly affected, needier parts of the county, declined from 13.9 percent last week to 12.4 percent. The numbers for the state’s color-coded tier framework are updated on Tuesdays. To move to the less-restrictive red tier from the top purple tier in the state’s coronavirus regulatory system, the county has to improve to 4 to 7 new daily cases per 100,000 and a 5 percent to 8 …