Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: Type 508 Accommodation and the title of the report in the subject line of e-mail.

Notes from the Field: Congenital Lymphocytic Choriomeningitis --- New York

Lymphocytic choriomeningitis virus (LCMV) is an arenavirus carried by rodents, most notably domestic house mice (Mus musculus), but also laboratory and pet rodents (1). Manifestations of infections in humans are protean, from inapparent or mild febrile illness to choriomeningitis, encephalitis, or severe multi-organ disease. Mother-to-child transmission of LCMV during pregnancy can cause abortion, chorioretinitis, hydrocephalus, or microencephaly, and can result in life-long vision deficits or neurologic impairment (2,3). Clinically, congenital LCMV infection closely resembles perinatal infections caused by the pathogens grouped under the TORCH acronym: toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus.

Reports of congenital LCMV cases are extremely rare in the United States. In January 2010, an infant in upstate New York with hydrocephalus and chorioretinitis was confirmed to have congenital LCMV infection by the Viral Special Pathogens Branch at CDC. A review of records by the Onondaga County Health Department (Syracuse, New York) and the New York State Department of Health found that 7 years earlier, two cases of congenital LCMV infection were diagnosed in infants residing within a 1.5-mile radius of the infant in the 2010 case.

LCMV infection is not a nationally notifiable disease in the United States, the extent of LCMV-associated morbidity is currently unknown, and most LCMV infections are believed to go undiagnosed. Health-care practitioners are encouraged to contact their local or state health department if they have observed cases of suspected LCMV infection. When LCMV-associated disease is suspected, the Viral Special Pathogens Branch at CDC asks that state health departments contact the branch via e-mail ( or telephone (404-639-1510) for consultation and diagnostic assistance and to better identify and characterize LCMV-associated morbidity in the United States.

Reported by

Onondaga County Health Dept, Syracuse; New York State Dept of Health. Viral Special Pathogens Br, National Center for Emerging and Zoonotic Infectious Diseases, CDC.


  1. Jamieson DJ, Kourtis AP, Bell M, Rasmussen SA. Lymphocytic choriomeningitis virus: an emerging obstetric pathogen? Am J Obstet Gynecol 2006;194:1532--6.
  2. Barton LL, Mets MB. Congenital lymphocytic choriomeningitis virus infection: decade of rediscovery. Clin Infect Dis 2001;33:370--4.
  3. Wright R, Johnson D, Neumann M, et al. Congenital lymphocytic choriomeningitis virus syndrome: a disease that mimics congenital toxoplasmosis or cytomegalovirus infection. Pediatrics 1997;100:E9.

Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.

References to non-CDC sites on the Internet are provided as a service to MMWR readers and do not constitute or imply endorsement of these organizations or their programs by CDC or the U.S. Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. URL addresses listed in MMWR were current as of the date of publication.

All MMWR HTML versions of articles are electronic conversions from typeset documents. This conversion might result in character translation or format errors in the HTML version. Users are referred to the electronic PDF version ( and/or the original MMWR paper copy for printable versions of official text, figures, and tables. An original paper copy of this issue can be obtained from the Superintendent of Documents, U.S. Government Printing Office (GPO), Washington, DC 20402-9371; telephone: (202) 512-1800. Contact GPO for current prices.

**Questions or messages regarding errors in formatting should be addressed to The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #