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Rotavirus: Symptoms, Treatment & Vaccination

Rotavirus is a highly contagious virus and one of the leading causes of severe diarrhea in infants and young children worldwide. It is preventable through vaccination.

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Things worth knowing about "Rotavirus"

Rotavirus is a highly contagious virus and one of the leading causes of severe diarrhea in infants and young children worldwide. It is preventable through vaccination.

What is Rotavirus?

Rotavirus is a highly contagious virus and one of the leading causes of severe gastroenteritis (inflammation of the stomach and intestines) in infants and young children globally. The name comes from the Latin word rota (wheel), as the virus resembles a wheel under the electron microscope. Rotaviruses belong to the family Reoviridae and exist in several different genotypes.

Causes and Transmission

Rotaviruses are primarily transmitted via the fecal-oral route, meaning through contact with contaminated stool, polluted water, or improperly prepared food. Transmission via contaminated surfaces and unwashed hands is also common. The virus is highly stable in the environment and can remain infectious on surfaces for hours.

Close contact with infected individuals (e.g., in daycare centers or hospitals)
Touching contaminated surfaces and then touching the mouth
Drinking contaminated water or consuming contaminated food

Symptoms

The incubation period is usually one to three days. The illness typically begins suddenly with the following symptoms:

Watery diarrhea (may last several days)
Vomiting
Fever
Abdominal cramps
Loss of appetite

The greatest risk is dehydration caused by excessive fluid loss, which can rapidly become life-threatening in infants and young children. Elderly individuals and those with weakened immune systems are also at higher risk of severe illness.

Diagnosis

Diagnosis is usually made based on characteristic clinical symptoms. Rapid antigen tests from stool samples are available to confirm the presence of rotavirus. In some cases, PCR (polymerase chain reaction) testing may be used to identify the specific viral genotype.

Treatment

There is currently no specific antiviral therapy for rotavirus infection. Treatment is supportive and focuses on replacing lost fluids and electrolytes:

Oral rehydration solutions (ORS): specially formulated sugar-salt solutions to drink
Intravenous fluids in cases of severe dehydration
Light diet and adequate fluid intake
Antibiotics are not effective against viral infections and are therefore not used

Prevention and Vaccination

The most effective preventive measure is rotavirus vaccination. Two oral vaccines are approved and widely recommended: Rotarix and RotaTeq. Both are administered as oral drops during infancy, typically starting at six weeks of age. The World Health Organization (WHO) recommends rotavirus vaccination for all infants worldwide.

In addition to vaccination, the following hygiene measures help reduce transmission:

Regular and thorough handwashing
Careful disposal of diapers
Disinfection of contaminated surfaces

References

World Health Organization (WHO): Rotavirus vaccines. WHO position paper. Weekly Epidemiological Record, 2013;88(5):49-64. Available at: https://www.who.int
Parashar UD, et al. - Rotavirus and Severe Childhood Diarrhea. Emerging Infectious Diseases, 2006;12(2):304-306. PubMed PMID: 16494759.
Burnett E, et al. - Global impact of rotavirus vaccination on childhood hospitalizations and mortality from diarrhea. Journal of Infectious Diseases, 2020;222(10):1731-1741. PubMed PMID: 32271386.

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