daughter contracting covid-19. >> i thought it was something i had done. maybe i passed on the virus. i didn't know it was happening around me. i needed the only thing i can do was to get on my knees and pray. >> reporter: despite all her pleas, little sarah died. he was only fighting. >> when she died, when they gave us the news, i was able to hold her. i was able to feel her one last time. >> reporter: it is a loss that's felt much more in brazil than many of the country. while the health ministry says 1,122 students under the age of ten died since the start of the pandemic. one research group argues the death toll is closer to 3,000. more than a thousand have lost their lives. doctors tell us the p-1 variant first found in brazil may not be to blame. >> they have been dying more in