Influenza activity in Tunisia: 2014-2015 season
Wafa Aissi1,&, Jihène Bettaieb1, Ghassen Kharroubi1, Marien Nouira1, Abir El Moussi2, Mokhtar Zorraga3, Amine Slim2, Afif Ben Salah1
1Department of Medical Epidemiology, Laboratory of Transmission, Control and Immunobiology of Infections (LR11IPT02), Pasteur Institute of Tunis, Tunisia, 2Virology Unit, Microbiology Laboratory, National Influenza Centre, Charles Nicolle’s Hospital, Tunis, Tunisia, 3Primary Health Care Directorate, Ministry of Public Health of Tunisia, Tunisia
Wafa Aissi, Department of Medical Epidemiology, Laboratory of Transmission, Control and Immunobiology of Infections (LR11IPT02), Pasteur Institute of Tunis, Tunisia
influenza is an important public health problem; it is a major cause of morbidity
and leads to considerable socio-economic consequences. The aim of this study
was to assess influenza activity for the 2014-2015 season in Tunisia.
influenza surveillance data was used for data analysis. It was obtained from
National Program for Surveillance and Control of influenza which involves the
National Influenza Centre (NIC) as well as a network of 268 sentinel sites for
reporting influenza-like illness (ILI). The NIC receives biological specimen
from the ILI sentinel sites as well as from university hospitals. The case definition
of ILI was that recommended by WHO “acute respiratory illness, and measured
fever ≥ 38°C, and cough, and onset in previous 10 days”.
influenza activity was relatively moderate at the national level during the
2014-15 season. It differed significantly according to age (p < 0.0001). It
differed significantly between governorates also with a proportional contribution
of influenza-associated ILI to all outpatients ranging from 0.98% in Bizerte
(Northern Tunisia) to 6.05% in Sidi Bouzid (Central Tunisia). In total, 1038
samples were tested, of which 28% were positive for influenza viruses: A
(H3N2), A (H1N1) pdm 2009 and B.
the 2014-2015 influenza season was marked by a moderate disease burden of
influenza-associated ILI and a co-circulation of three influenza viruses.
Reliable surveillance data is needed to provide decision-makers with the evidence
for public health policies on influenza prevention and control. Determining
influenza viruses in circulation ensures the adequacy the vaccine and eventually
detection of new influenza viruses with pandemic potential.
1st International Military Congress of Tropical Medicine and Sub-Saharan Diseases ()
Dates: 23 Oct 16 - 25 Oct 16
Contact person: Pr Salem Bouomrani (Salembouomrani@yahoo.fr)