Thank you for your query on Healthcare Magic.
Both the Children seems having gastroenteritis
mostly due to a virus.
The mainstay of treatment is to maintain and monitor the hydration of children.
Give sips of ORS
to maintain hydration of the children.
Moniotor their activity, urine output, and skin turgor.
For vomitings, you can give ondansetron
in prescribed dose.
Consult the doctor for examination and treatment.
Hope I have answered your query.