This is [quite interesting thing](https://np.reddit.com/r/IndiaSpeaks/comments/gh5ewo/human_blood_group_b_likely_originated_in_or_near/) to note about our Indian subcontinent i.e. majority of group B blood type people reside in Indian subcontinent. And Thailand - purple island in the sea of red. What story could it be hiding! So what is your blood group? Mine is A+. Also do check out amazing wikipedia page on [Blood groups](https://en.wikipedia.org/wiki/Blood_type)