The first Delta sub-variants, which have been verified, AY.1 and AY.2, were first discovered in Nepal.
ຕົວແປຍ່ອຍຍ່ອຍຂອງ Delta ທໍາອິດ, ເຊິ່ງໄດ້ຜ່ານການກວດສອບແລ້ວ, AY.1 ແລະ AY.2, ໄດ້ຖືກຄົ້ນພົບຄັ້ງທໍາອິດໃນປະເທດເນປານ.