Most often loose motions in children is caused due to certain viral infections. Rotavirus is one of such viruses, but not the only one. But presence of some amount of blood could indicate a bacterial infection that might need treatment with antibiotics. If the child is active and fine there is perhaps less cause to worry but I would insist you to get a routine microscopy of stool done. If the results indicate increased pus cell count, it could indicate a bacterial infection and could require to be treated with antibiotics like Ofloxacin. But in case pus cell count is normal, there is no need to give antibiotics and there is less to worry about. Giving ORS (oral rehydration solution) to prevent dehydration is important. It comes in ready made form or may be prepared by mixing a full sachet in the designated amount of water. Replenishment of the lost water and salts as the mainstay of treatment. Treatment is not supposed to bring down the frequency of passage of loose stools. The adequacy of the hydration would be evident from the frequency of passage of urine. If that seems to be fine, you need not worry. But unless the child grows lethargic, I would not get concerned. It may still take 3-7 days (from the onset) to stop. You may give zinc supplementation with Zinconia Syr 5 ml twice daily for 5 days. It will help in the intestinal healing as the diarrhoea causes some damage to the inner wall of the intestines. You may also give some amount of yogurt/curd as it contains beneficial bacteria.