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Volume 22, Number 5—May 2016
Research

Acute Human Inkoo and Chatanga Virus Infections, Finland

Niina PutkuriComments to Author , Anu Kantele, Lev Levanov, Ilkka Kivistö, Markus Brummer-Korvenkontio, Antti Vaheri, and Olli Vapalahti
Author affiliations: University of Helsinki, Helsinki, Finland (N. Putkuri, L. Levanov, I. Kivistö, M. Brummer-Korvenkontio, A. Vaheri, O. Vapalahti); Helsinki University Hospital, Helsinki (A. Kantele, A. Vaheri, O. Vapalahti)

Main Article

Table 4

Clinical progression of illness for patients hospitalized with acute INKV (n = 4) or CHATV infection (n = 2), Finland*

Virus and patient no.
 Illness progression
 Additional findings
INKV
1 Day 1: fever 38°C, influenza-like symptoms Elevated HHV-6 antibody levels from same sample
Day 3: disoriented
Day 6: hospitalized, abnormal EEG, CAL IgM+
Day 7: psychotic but discharged
Day 10: follow-up EEG shows same abnormalities
3 mo later: EEG almost normal
2 Day 1: fever 39.5°C, headache, nuchal rigidity, sore throat before fever, hospitalized Tick bite 1 mo earlier, erythema migrans; day 1: BorrAb neg
Day 2: nuchal rigidity, headache deteriorating, slowness but oriented
Day 3: discharged, CAL IgM+
Day 5: headache again, hospitalized
Day 6: discharged
3 Day 1: vomiting
Day 2: stomach pain, diarrhea, seizures,  hospitalized
Day 3: fever 38.3°C, drowsiness, convulsions
Day 4: More seizures, small changes in EEG
Day 5: CAL IgM+
Day 8: discharged
4 Day 1: fever 37.9°C, sore throat Tick bite 3 wks earlier
Day 3: CAL IgM+
Day 4: nausea and vomiting
Day 5: fever 39°C, headache, nuchal rigidity, hospitalized
Day 10: recovered and discharged
CHATV
1 Day 1: vomiting continuing for 3 d
Day 4: fever, hospitalized, disoriented at night
Day 7: frontal headache, normal head CT and abdominal ultrasound
Day 12: discharged, CAL IgM+
2 Day 1: fever 39°C, back pain Back injury 2 wks earlier
Day 7: hospitalized, high fever, back pain almost resolved
Day 7–22: temporal pain, trembling of hands, fluctuating fever
Day 17: CAL IgM+
Day 23: discharged

*BorrAb, Borrelia antibody test; CHATV, Chatanga virus; CT, computer tomographic scan; EEG, electroencephalogram; HHV, human herpesvirus; INKV, Inkoo virus. CAL IgM+ indicates the day when IgM for California encephalitis group viruses was observed.

Main Article

Page created: April 13, 2016
Page updated: April 13, 2016
Page reviewed: April 13, 2016
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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