Delhi says it has run out of doses and is waiting for fresh supplies. (FILE) New Delhi: Two days before vaccinations open to all above 18, there is uncertainty in many states over the availability of vaccines. States like Maharashtra and Delhi say they don't have enough doses. Here is your ten-point cheat sheet on this big story: Vaccinations in Mumbai of those between 18 and 44 will start only after enough vaccines are made available, and "not exactly on 1st May," tweeted Ashwini Bhide, Additional Municipal Commissioner in Mumbai's civic body BMC. The official said senior citizens need not worry about being deprived of Covid shots. "Please wait till we have adequate vaccine stock and you can get your jab without having to stand in long queues," Ms Bhide said in tweets.