In poor countries, children are likely to become infected with worms from the moment they stop breastfeeding and continue to be reinfected throughout their lives. Worm infections rarely have acute consequences for children, but instead lead to chronic infections that negatively impact child development, including health, nutrition, cognitive development, access to and achievement in school.

Children are most susceptible to parasitic diseases, especially hookworms, pinworms, and whipworms that often attack children or combine to leave many dangerous complications. Preventing parasitic diseases helps reduce the risk of infection as well as limit complications caused by parasitic diseases.

Normally, children over 2 years old will be dewormed every 6 months. For children under 2 years old, if infected with worms, it will cause loss of appetite, slow growth and malnutrition,... Therefore, it is necessary to take children to a medical facility for screening and appropriate intervention.

Not only families with children with poor appetite have to worry about their child's weight, but even children with adequate nutrition are still stunted, have poor absorption and slow weight gain. So what is the reason why children eat a lot but are still stunted and do not gain weight? Do mothers need to go to the hospital to have their children examined for nutrition?

Helminth infections and zinc deficiency are common in low- and middle-income countries and both are known to affect child growth.