I had taken a tt injection on my left deltoid region for a minor wound. After about 5 minutes while I was driving my bike, a person in the market spitted on the road and some drops from it fell on my injection site. I feared if that person had HIV and he had any wound in his mouth for which it might have blood, then can HIV transmitted to me as his spit fell on my injection site where I had taken injection before 5 minutes and I was sweating as it was summer?