THE STATE LARGEST HEALTH INSURERS ARE REPORTING MIXED RESULTS FOR THE FIRST QUARTER. BLUE CROSS HAD A NET LOSS OF 2.2 MILLION DOLLARS FROM HIGH FLU AND OTHER SEASONAL MEDICAL COSTS AS WELL AS THE LOSS OF MEMBERS DURING CORPORATE MERGERS. HARVARD PILGRIM, TUFTS AND FALLON ALL POSTED NET GAINS. ALL FOUR INSURERS USED INVESTMENT INCOME TO OFFSET OPERATING LOSSES.