The New York City Health Department did not investigate the school where a teacher died after contracting Legionnaires’ disease in April. Three months later, an outbreak hit the city, killing 12 people. James Rouse taught at P.S. 325 in the South Bronx, which was never inspected by officials, nor were colleagues of his interviewed, according to his sister. “In this case we interviewed the patient’s sister since the patient had unfortunately died before we able to speak with him,” the spokesman said. The school will re-open for students next month, and officials say it will be cleaned and inspected.