if you are injecting for both paramixo and paratyphoid its the same size dosage and like north wales novice says in the neck for both
try and inject in the right hand side of the neck for one and in the left hand side for the other so you avoid sticking the needle in or near the first jab
obviously dont do them at the same time preferably 2 weeks apart with multi vits after each treatment
we treat for paratyhoid first with a 10 day treatment of parastop first then multi vits then inject