Autism & Developmental

Brief report: autistic disorder in three children with cytomegalovirus infection.

Sweeten et al. (2004) · Journal of autism and developmental disorders 2004
★ The Verdict

Congenital CMV can hide behind an autism diagnosis—screen when you see hearing loss or brain changes.

✓ Read this if BCBAs assessing infants and toddlers with autism plus sensory or neurological red flags.
✗ Skip if Clinicians working only with older youth who already have full medical work-ups.

01Research in Context

01

What this study did

Doctors wrote up three toddlers who had both autism and congenital CMV.

They listed each child’s delays, hearing loss, and brain-scan results.

The goal was to flag CMV as a possible hidden cause of some autism cases.

02

What they found

All three children got an autism label before age three.

Each child also had CMV infection from birth and mild brain changes.

The team said the virus might trigger immune problems that shape early brain growth.

03

How this fits with other research

Cohen et al. (2005) and Pan et al. (2021) later folded CMV into their checklists of medical issues that ride along with autism.

Sparaci et al. (2015) went bigger, counting thousands of Finnish kids and showing that autism plus any congenital anomaly raises the chance of intellectual disability.

Green et al. (1986) used the same small-case style but looked at chromosome flaws instead of viruses; both papers push clinicians to hunt for treatable biology.

04

Why it matters

If a two-year-old client has autism plus hearing loss, microcephaly, or seizures, ask the pediatrician about CMV testing. Early antiviral treatment can spare hearing and may improve developmental gains. Add CMV to your medical red-flag list alongside fragile X and tuberous sclerosis.

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Add one question to your intake: ‘Any hearing loss or newborn CMV test?’ If yes, request audiology and medical follow-up before the next therapy cycle.

02At a glance

Intervention
not applicable
Design
case series
Sample size
3
Population
autism spectrum disorder
Finding
not reported

03Original abstract

Previous research has identified a relationship between autistic disorder (autism) and specific congenital infections. Three cases of congenital or perinatal cytomegalovirus (CMV) infection occurring in association with autism are described. Hypothetical mechanisms relating congenital infection, such as CMV, to the development of autism are discussed. A better understanding of the immunologic response to certain congenital infections may provide important information pertaining to the pathophysiology and etiology of autism in vulnerable individuals.

Journal of autism and developmental disorders, 2004 · doi:10.1007/s10803-004-2552-y