Novel Influenza A Virus Case Status Summary

Novel Influenza A Virus
Case Status Summary

Form Approved
OMB No. 0920-0004

Jurisdiction: ______________________________ Report for* ____/____/_______
Confirmed cases**
New Cases

Cumulative total

New Cases

Cumulative Total

New Cases

Current Total Under
Investigation

Outpatient - ill
Hospitalized
Dead
Recovered
Unknown
TOTAL

Probable cases**
Outpatient - ill
Hospitalized
Dead
Recovered
Unknown
TOTAL

Suspect cases**

Outpatient - ill
Hospitalized
Dead
Recovered
Unknown
TOTAL

Non-ill contacts under observation
Previous total
(A)

New
(B)

Reclassified due
to illness
(C)

Released after 7
days of
observation and
no illness
(D)

Current total
under
observation
(A + B – C – D)

Public reporting burden of this collection of information is estimated to average 15 minutes per response, including the time 
for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and 
reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a 
collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden 
estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR 
Information Collection Review Office, 1600 Clifton Road NE, MS D‐74, Atlanta, Georgia 30333; ATTN: PRA (0920‐0004).

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* The reporting period is a calendar day (midnight to midnight). Reports should be faxed to
CDC at 1-888-232-1322 each day by noon Eastern time.
** Case definitions:
Confirmed: Influenza virus infection with laboratory confirmation by:
 Genetic sequencing performed at the CDC Influenza Division Laboratory
OR


Results consistent with novel influenza A using the CDC Flu rRT-PCR Dx
Panel.

OR


A 4-fold rise in strain specific serum antibodies with specimens drawn 2
weeks apart.

Probable: A case meeting clinical criteria* and criteria for epidemiologic linkage†, but for
which no confirmatory laboratory testing for influenza virus infection has been performed, or
for which test results do not provide a sufficient level of detail to confirm novel influenza A
virus infection.
Case Under Investigation: A case meeting the clinical criteria* but not criteria for
epidemiologic linkage† and is pending laboratory confirmation.
* Clinical criteria: Illness compatible with influenza virus infection: fever ≥100°F with
cough and/or sore throat.
† Criteria for Epidemiologic Linkage:
 Contact with one or more confirmed cases of novel influenza A virus
infection or attendance at an event where confirmed cases have been
identified.
AND


Transmission of novel influenza A virus by the usual modes of respiratory
pathogen transmission is plausible.

A case may be considered epidemiologically linked to a laboratory-confirmed
case if at least one case in the chain of transmission is laboratory-confirmed.