NEW Delhi, Aug. 21 -- The Union government has told the Supreme Court that there is no need to revise the existing blood transfusion policy prohibiting donations from transgender persons, men having sex with men (MSM) and women sex workers, underlining that these groups continue to present a statistically higher risk of HIV and other transfusion-transmitted infections (TTIs). "Allowing blood donations from individuals statistically linked with a higher prevalence of TTIs would proportionately increase systemic risks and undermine the integrity and reliability of the national blood supply chain.No modification or relaxation of the guidelines is warranted at this time," stated the affidavit filed by the Ministry of Health and Family Welfare. These guidelines are firmly rooted in globally accepted scientific research, established public health principles, and robust epidemiological evidence," the affidavit said....