View Baby Stomach Pain After Rotavirus Vaccine Pictures. Rotavirus is present in an infected person's stool two days before symptoms appear and for up to 10 days after symptoms lessen. Vaccines are the biological preparation that contains inactivated or weakened infectious agents. These episodes could last just a few minutes and come and go several times in an. The vaccine, which contains a weakened strain of rotavirus, will be given to your baby by mouth via a dropper. The vaccine has been used in many countries and. For intussusception, look for signs of stomach pain along with severe crying.Early on, these episodes could last just a few minutes and come and go several times in an hour.