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Volume 22, Number 8—August 2016
Letter

Influenza A(H7N7) Virus among Poultry Workers, Italy, 2013

Simona Puzelli1Comments to Author , Caterina Rizzo1, Concetta Fabiani, Marzia Facchini, Paolo Gaibani, Maria P. Landini, Carlo Gagliotti, Maria L. Moro, Roberto Rangoni, Luisa Loli Piccolomini, Alba C. Finarelli, Marco Tamba, Giovanni Rezza, Silvia Declich, Isabella Donatelli, and Maria R. Castrucci
Author affiliations: Istituto Superiore Sanità, Rome, Italy (S. Puzelli, C. Rizzo, C. Fabiani, M. Facchini, G. Rezza, S. Declich, I. Donatelli, M.R. Castrucci); St. Orsola University Hospital, Bologna, Italy (P. Gaibani, M.P. Landini); Agenzia Sanitaria Regionale Emilia-Romagna, Bologna Region (C. Gagliotti, M.L. Moro, R. Rangoni, L.L. Piccolomini, A.C. Finarelli); Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Brescia, Italy (M. Tamba)

Main Article

Table

HI and MN antibody titers for influenza A(H7N7) virus and other H7 subtype viruses in serum samples of 5 men, Italy, 2013*

Person ID and phase type† Age, y Activity of person Date of sample collection Virus strain (subtype) and titer
A/It/3/2013 (H7N7)
 A/Tk/It/3889/ 1999 (H7N1)
 A/Tk/It/214845/ 2002 (H7N3)
 A/Ck/It/2837-54/2007 (H7N3)
HI MN HI MN HI MN HI MN
1
Acute 51
 PW, culling
 Sep 6 10 <10 <10 <10 <10 <10 <10 <10
Convalescent
 Dec 6
 20
 35
<10
 <10
<10
 <10
<10
 <10
2
Acute 46
 Culling
 Sep 6 10 <10 <10 <10 <10 <10 <10 <10
Convalescent
 Dec 11
 20
 62
<10
 <10
<10
 <10
<10
 <10
3
Acute 49
 Culling
 Sep 7 <10 <10 <10 NT <10 NT <10 NT
Convalescent
 Dec 23
 10
 87
<10
 <10
<10
 <10
<10
 <10
FO10‡ 34 Culling Dec 23 20 72 <10 <10 <10 <10 <10 <10
RA32‡ 55 PW, culling Dec 11 20 33 <10 <10 <10 <10 <10 <10

*Bold indicates titers of seropositive persons (HI positive results confirmed 3 times by MN). Values for 1 of 3 MN assays that showed similar results are reported. Seropositive persons were selected from 93 persons who participated in the study among 140 persons involved in culling activities. HI, hemagglutination inhibition; ID, identification; MN, microneutralization; NT, not tested; PW, poultry worker.
†Persons 1, 2, and 3 had laboratory-confirmed cases of conjunctivitis caused by infection with influenza A(H7N7) virus.
‡Asymptomatic person.

Main Article

1These authors contributed equally to this article.

Page created: July 15, 2016
Page updated: July 15, 2016
Page reviewed: July 15, 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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