Rotavirus warning for South African parents: Know the signs of dehydration

Health experts are urging South African parents to watch carefully for dehydration as the 2026 rotavirus season begins. According to IOL, the National Institute for Communicable Diseases has reported a sharp increase in cases in Pretoria, and clinicians are reminding caregivers that young children can become dangerously dehydrated within a short period.

Key warning from clinicians

According to IOL, Dr Angelique Coetzee has urged parents not to panic as South Africa’s 2026 rotavirus season gets under way, warning that babies and young children can become dangerously dehydrated within 24 to 48 hours. Health professionals say awareness and early action can prevent severe illness.

How rotavirus spreads and what parents should do

According to IOL,

“Parents should be aware but not panic. We know rotavirus is extremely common in young children, and it spreads very easily, particularly through contaminated hands, surfaces and objects,”

Coetzee told IOL. Parents and caregivers are encouraged to ensure children are vaccinated, continue breastfeeding infants and act quickly when diarrhoea or vomiting begins.

Signs of dehydration to watch for

According to IOL,

“Warning signs of dehydration include a dry mouth, no tears when crying, fewer wet nappies or very little urine. Other signs include sunken eyes, unusual sleepiness or lethargy and refusing to drink.”

Monitoring how often a baby passes urine is one simple way to track fluid loss.

According to IOL,

“A child who becomes very sleepy or floppy, develops cold or mottled skin, has rapid breathing or a rapid heartbeat, or cannot drink needs urgent medical attention.”

Speed of dehydration and treatment steps

According to IOL,

“Rotavirus can take a previously healthy baby from diarrhoea and vomiting to significant dehydration surprisingly quickly, within 24 to 48 hours. That child can really dehydrate, and then you need to be admitted.”

Clinicians advise giving oral rehydration solution to children with diarrhoeal symptoms to replace lost fluids and help prevent dehydration.

Vaccine role and concerns

According to IOL,

“Coetzee said parents should understand that the vaccine is not necessarily intended to prevent every single episode of diarrhoea. Its most important benefit is reducing the likelihood that a young child develops severe rotavirus gastroenteritis, becomes dangerously dehydrated and requires hospitalisation.”

According to IOL,

“For parents who are hesitant about vaccination, Coetzee said it was important to seek information from healthcare professionals rather than social media.”

Bottom line for caregivers

Parents are advised to stay calm but vigilant: keep fluids going, watch for the specific signs of dehydration listed by clinicians, and seek urgent medical care if a child shows severe symptoms.