Zika virus infection
- Overview
- Theory
- Diagnosis
- Management
- Follow up
- Resources
Treatment algorithm
Please note that formulations/routes and doses may differ between drug names and brands, drug formularies, or locations. Treatment recommendations are specific to patient groups: see disclaimer
symptomatic: nonpregnant
supportive therapy
Treatment for symptoms includes rest, fluids, and use of analgesics and/or antipyretics (e.g., acetaminophen).
Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) should be avoided until dengue virus infection can be ruled out to reduce the risk of hemorrhage.[128]Centers for Disease Control and Prevention. Zika virus: treatment and prevention of Zika virus disease. May 2024 [internet publication]. https://www.cdc.gov/zika/hcp/clinical-care/index.html
Calamine lotion may be used topically for the itch associated with the rash.
Primary options
acetaminophen: children: 10-15 mg/kg orally every 4-6 hours when required, maximum 75 mg/kg/day; adults: 325-1000 mg orally every 4-6 hours when required, maximum 4000 mg/day
pregnant: with possible mosquito-borne or sexual exposure
supportive therapy plus monitoring
Pregnant women who may have been exposed to Zika virus should have recommended laboratory testing and regular fetal ultrasounds (e.g., every 3-4 weeks) to assess the fetus for the presence of microcephaly or other abnormalities. All pregnant women should be encouraged to attend scheduled prenatal visits.[14]Pan American Health Organization; World Health Organization. Provisional remarks on Zika virus infection in pregnant women: document for health care professionals. Jan 2016 [internet publication]. http://iris.paho.org/xmlui/handle/123456789/18600 [175]Centers for Disease Control and Prevention. Zika virus: clinical considerations for pregnant persons with possible Zika virus infection. May 2024 [internet publication]. https://www.cdc.gov/zika/hcp/clinical-pregnant/index.html
If symptomatic, supportive therapies include rest, fluids, and use of analgesics and/or antipyretics (e.g., acetaminophen). Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) should be avoided. Nondrug measures may be recommended (e.g., damp cloths, lukewarm baths/showers) to reduce fever during pregnancy. However, if these measures fail, acetaminophen can be used safely in pregnant women. Calamine lotion may be used for the itch associated with the rash.
Appropriate psychological support for the woman and her family is recommended.[196]World Health Organization. Psychosocial support for pregnant women and for families with microcephaly and other neurological complications in the context of Zika virus. Feb 2016 [internet publication]. https://www.who.int/publications/i/item/WHO-ZIKV-MOC-16.6
Primary options
acetaminophen: children: 10-15 mg/kg orally every 4-6 hours when required, maximum 75 mg/kg/day; adults: 325-1000 mg orally every 4-6 hours when required, maximum 4000 mg/day
congenital Zika syndrome
evaluation plus monitoring
There is no specific treatment, and management will depend on the individual and the presence of specific symptoms and neurodevelopmental problems (e.g., seizures, intellectual disability, cerebral palsy, hearing/vision problems). Supportive therapies should be started. Children should start rehabilitation as soon as possible. This rehabilitation process must include multidisciplinary support with a physical therapist, speech therapist, and occupational therapist.
The Centers for Disease Control and Prevention has produced detailed guidance for the initial evaluation and outpatient management of infants with possible congenital Zika virus infection during the first 12 months of life. CDC: interim guidance for the diagnosis, evaluation and management of infants with possible congenital Zika virus infection Opens in new window
The World Health Organization also offers specific guidance for the screening, assessment, and management of neonates and infants with congenital Zika infection. WHO: screening, assessment and management of neonates and infants with complications associated with Zika virus exposure in utero Opens in new window
A coordinated approach, with ongoing psychosocial support for families and caregivers, is recommended.[2]Adebanjo T, Godfred-Cato S, Viens L, et al. Update: interim guidance for the diagnosis, evaluation, and management of infants with possible congenital Zika virus infection - United States, October 2017. MMWR Morb Mortal Wkly Rep. 2017 Oct 20;66(41):1089-99. https://www.cdc.gov/mmwr/volumes/66/wr/mm6641a1.htm?s_cid=mm6641a1_w http://www.ncbi.nlm.nih.gov/pubmed/29049277?tool=bestpractice.com [176]World Health Organization. Screening, assessment and management of neonates and infants with complications associated with Zika virus exposure in utero. Aug 2016 [internet publication]. https://www.who.int/publications/i/item/WHO-ZIKV-MOC-16.3-Rev.1
Breast-feeding according to normal infant feeding guidelines is still recommended in women with suspected, probable, or confirmed infection, or those who reside in or have traveled to areas of ongoing transmission. Transmission through breast milk is only a theoretical concern at this point and the benefits of breast-feeding outweigh the risk of transmission. It is unclear whether breast milk from infected women has enough viral load or infectivity to lead to infection among infants.[90]Colt S, Garcia-Casal MN, Peña-Rosas JP, et al. Transmission of Zika virus through breast milk and other breastfeeding-related bodily-fluids: a systematic review. PLoS Negl Trop Dis. 2017 Apr 10;11(4):e0005528. http://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0005528 http://www.ncbi.nlm.nih.gov/pubmed/28394887?tool=bestpractice.com [197]World Health Organization. Guideline: infant feeding in areas of Zika virus transmission, 2nd edition. Jun 2021 [internet publication]. https://www.who.int/publications/i/item/9789240029187 [198]Mann TZ, Haddad LB, Williams TR, et al. Breast milk transmission of flaviviruses in the context of Zika virus: a systematic review. Paediatr Perinat Epidemiol. 2018 Jul;32(4):358-68. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6103797 http://www.ncbi.nlm.nih.gov/pubmed/29882971?tool=bestpractice.com One systematic review found no evidence of perinatal transmission via breast-feeding or breast milk intake based on low-certainty evidence.[91]Centeno-Tablante E, Medina-Rivera M, Finkelstein JL, et al. Update on the transmission of Zika virus through breast milk and breastfeeding: a systematic review of the evidence. Viruses. 2021 Jan 18;13(1):123. https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC7830280 http://www.ncbi.nlm.nih.gov/pubmed/33477428?tool=bestpractice.com Among infants ages 0 to 12 months who are affected by complications associated with Zika virus infection, infant feeding practices should be modified (e.g., postural correction, thickening feeds, adjusting the environment) to achieve and maintain optimal possible infant growth and development. Mothers and caregivers should receive skilled support from healthcare workers.[197]World Health Organization. Guideline: infant feeding in areas of Zika virus transmission, 2nd edition. Jun 2021 [internet publication]. https://www.who.int/publications/i/item/9789240029187
Zika-associated Guillain-Barre syndrome
supportive therapy plus immunotherapy
There are few data on the treatment of Guillain-Barre syndrome (GBS) in the context of Zika virus infection.
All patients should be admitted to hospital and monitored closely for at least 5 days or until clinically stable. Some patients may require a higher level of care in the intensive care unit (e.g., patients with rapid progression of motor weakness, respiratory distress, bulbar symptoms, or autonomic dysfunction). Patients should be monitored closely for complications.[143]World Health Organization. Assesssment and management of Guillain-Barré syndrome in the context of Zika virus: interim guidance update. Aug 2016 [internet publication]. https://www.who.int/publications/i/item/WHO-ZIKV-MOC-16.4-Rev.1
Management should be based on symptoms according to usual treatment protocols for GBS and involves supportive therapy (e.g., airway management, cardiovascular management, pain management, plasma exchange, intravenous immunoglobulin, rehabilitation, deep vein thrombosis prophylaxis, nutritional support, bowel and bladder care, prevention of bed sores, prevention of corneal ulceration if facial weakness present) as well as psychosocial support and early initiation of a rehabilitation program.[143]World Health Organization. Assesssment and management of Guillain-Barré syndrome in the context of Zika virus: interim guidance update. Aug 2016 [internet publication]. https://www.who.int/publications/i/item/WHO-ZIKV-MOC-16.4-Rev.1 [145]Gold CA, Josephson SA. Anticipating the challenges of Zika virus and the incidence of Guillain-Barré syndrome. JAMA Neurol. 2016 Aug 1;73(8):905-6. http://archneur.jamanetwork.com/article.aspx?articleid=2526494 http://www.ncbi.nlm.nih.gov/pubmed/27272118?tool=bestpractice.com
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Please note that formulations/routes and doses may differ between drug names and brands, drug formularies, or locations. Treatment recommendations are specific to patient groups. See disclaimer
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