Volume 27, Number 2—February 2021
CME ACTIVITY - Synopsis
Zika Virus–Associated Birth Defects, Costa Rica, 2016–2018
Table 1
Distribution of 204 excluded cases according to exclusion criteria for Zika virus–associated birth defects, Costa Rica, March 2016–March 2018*
Category, cause |
No. cases |
---|---|
Chromosome anomaly, n = 11 | |
Ring chromosome 4. Possible Wolf-Hirschhorn | 1 |
Mosaic 47,XYY/46,XY | 1 |
Trisomy 13 | 5 |
Trisomy 18 | 1 |
Trisomy 21 |
3 |
STORCH, n = 13 | |
Congenital syphilis | 2 |
Congenital toxoplasmosis | 6 |
Rubella | 0 |
Congenital cytomegalovirus | 4 |
Congenital hepatitis B |
1 |
Birth defects (isolated, multiple nonsyndromic), n = 38 | |
Anencephaly and rachischisis | 3 |
Congenital heart defect | 7 |
Craniosynostosis | 1 |
Gastroschisis | 2 |
Hydranencephaly and hydrocephaly | 4 |
Microcephaly, constitutional or familial | 11 |
Multiple malformations of unknown cause | 8 |
Partial agenesis of the corpus callosum | 1 |
Cleft palate |
1 |
Diseases, maternal conditions, or problems at delivery, n = 27 | |
Maternal alcoholism or drug use | 7 |
Hypoxic encephalopathy or acute fetal distress at birth | 5 |
Maternal ossifying myositis | 1 |
Maternal hyperthyroidism | 1 |
Pregnancy-induced hypertension with or without pre-eclampsia | 9 |
Maternal chronic arterial hypertension | 2 |
Maternal tuberculosis | 1 |
Maternal epilepsy |
1 |
Other genetic diseases or other specific syndromes of the infant, n = 16 | |
Crouzon syndrome | 1 |
Septo-optic dysplasia | 1 |
Holoprosencephaly | 8 |
Cystic fibrosis | 1 |
Roberts syndrome (possible) | 1 |
Meckel Gruber syndrome (possible) | 1 |
Aicardi Goutières syndrome (probable) | 1 |
Russel Silver syndrome | 1 |
Familial syndrome not specified |
1 |
Newborn with microcephaly with subsequent normal head circumference and no other findings, n = 99† | |
Term newborns‡ | 86 |
Premature newborns |
13 |
Total excluded cases | 204 |
*STORCH, syphilis, toxoplasmosis, rubella, cytomegalovirus, and hepatitis B. Note that Costa Rica does not include hepatitis B in its standard evaluations. †Newborns that do not belong to any other category of causes. ‡Includes 56 with and 30 without intrauterine growth restriction.