Omicron subvariant BF.7 detected in Odisha. First case of BF.7 in Odisha. Is among first three cases in India. BF.7 highly transmissible Omicron strain. BF.7 sub-lineage of Omicron variant BA.5. BF.7 has strongest infection ability. Can cause re-infection even in vaccinated. Subvariant BF.7 exploding cases in China.