Missionaries of Charity 517 missions in more than 100 countries. In 1990, Mother Teresa asked to resign as head of the Missionaries, but was soon voted back in as Superior General. On March 13, 1997, six months before Mother Teresa's death, Sister Mary Nirmala Joshi was selected the new Superior General of the Missionaries of Charity. Sister Mary Prema was elected to succeed Sister Nirmala during a general chapter held in Kolkata in April 2009. In July 1998 in Al Hudaydah, Yemen, three Missionaries of Charity, two Indians and a Filipina, were shot and killed as they left a hospital. In March 2016
Sellappan Nirmala Medical Research, which told the prime minister Rajiv Gandhi and Tamil Nadu health minister H. V. Hande. HIV subsequently became an epidemic in the country. Nirmala submitted her dissertation, "Surveillance for Aids in Tamil Nadu", in March 1987 and later joined the King Institute of Preventive Medicine and Research in Chennai. She retired in 2010. Sellappan Nirmala Nirmala Sellappan (born 1952 or 1953) is an Indian doctor who discovered the first case of HIV in India in 1986. In 1985, aged 32, she was working as a microbiology student in Chennai (Madras) and for her dissertation, began collecting blood samples