scholarly journals Surveillance of Hospitalisations for 2009 Pandemic Influenza A(H1N1) in the Netherlands, 5 June – 31 December 2009

2010 ◽  
Vol 15 (2) ◽  
Author(s):  
T M van ‘t Klooster ◽  
C C Wielders ◽  
T Donker ◽  
L Isken ◽  
A Meijer ◽  
...  
Keyword(s):  
The Netherlands ◽  
Pandemic Influenza ◽  
Influenza A ◽  
Medical Condition ◽  
Notification System ◽  
Admission Rates ◽  
Hospitalised Patients ◽  
Influenza A H1n1 ◽  
Mandatory Notification ◽  
Epidemiological Characteristics

We analysed and reported on a weekly basis clinical and epidemiological characteristics of patients hospitalised in the Netherlands for the 2009 pandemic influenza A(H1N1) using information from the national mandatory notification system. The notification criteria changed on 15 August 2009 from all possible, probable and confirmed cases to only laboratory-confirmed pandemic influenza hospitalisations and deaths. In the period of comprehensive case-based surveillance (until 15 August), 2% (35/1,622) of the patients with pandemic influenza were hospitalised. From 5 June to 31 December 2009, a total of 2,181 patients were hospitalised. Of these, 10% (219/2,181) were admitted to an intensive care unit (ICU) and 53 died. Among non-ICU hospitalised patients, 56% (961/1,722) had an underlying medical condition compared with 70% (147/211) of the patients in ICU and 46 of the 51 fatal cases for whom this information was reported. Most common complications were dehydration among non-ICU hospitalised patients and acute respiratory distress syndrome among patients in ICU and patients who died. Children under the age of five years had the highest age-specific hospitalisation rate (62.7/100,000), but relatively few were admitted to an ICU (1.7/100,000). Characteristics and admission rates of hospitalised patients were comparable with reports from other countries and previous influenza seasons. The national notification system was well suited to provide weekly updates of relevant monitoring information on the severity of the pandemic for professionals, decision makers, the media and the public, and could be rapidly adapted to changing information requirements.

scholarly journals The burden of 2009 pandemic influenza A(H1N1) in the Netherlands

2010 ◽  
Vol 22 (1) ◽  
pp. 150-157 ◽  
Author(s):  
C. C. H. Wielders ◽  
E. A. van Lier ◽  
T. M. van 't Klooster ◽  
A. B. van Gageldonk-Lafeber ◽  
C. C. van den Wijngaard ◽  
...  
Keyword(s):  
The Netherlands ◽  
Pandemic Influenza ◽  
Influenza A ◽  
Influenza A H1n1

scholarly journals Epidemiological Profile of Pandemic Influenza A (H1N1) 2009 at Dhaka Medical College Hospital

1970 ◽  
Vol 11 (1) ◽  
pp. 3-6
Author(s):  
Quazi Tarikul Islam ◽  
Azizul Kahhar ◽  
Syed Mohammad Arif ◽  
Ahmedul Kabir ◽  
Khan Mohammed Arif ◽  
...  
Keyword(s):  
Pandemic Influenza ◽  
Influenza A ◽  
Medical College Hospital ◽  
College Hospital ◽  
Case Record ◽  
Suspected Infection ◽  
Medical College ◽  
First Case ◽  
Influenza A H1n1 ◽  
Epidemiological Characteristics

The first case of 2009 pandemic influenza A (H1N1) virus infection in Bangladesh was documented on June 18. Subsequently, persons with suspected cases of infection and contacts of those with suspected infection were tested. Individuals in whom infection was confirmed were hospitalized and quarantined, and some of them were closely observed for the purpose of investigating the nature and duration of the disease. In Dhaka Medical College Hospital, there were 28 admitted patients in flu ward and 2335 registered suspected H1N1 influenza cases attended in flue corner but 833 highly suspected cases were recorded in case record form. We describe the epidemiological characteristics of 28 indoor (flu ward) and 833 outdoor (flu corner) patients. Most of them were in between 20 to 30 years age group. Among 833 outdoor patients 611(73.34%) were male and 222(26.65%) were female. 354 (42.49%) patients were student, 195 (23.40%) were service holder. No patients (indoor) had any serious underlying medical conditions. Keywords: Pandemic influenza A (H1N1), Dhaka Medical College Hospital, Bangladesh, epidemiology. DOI:10.3329/jom.v11i1.4259 J Medicine 2010: 11: 3-6

scholarly journals Two doses of pandemic influenza A(H1N1) vaccine: Tolerability in healthy young children in the Netherlands

2011 ◽  
Vol 7 (10) ◽  
pp. 1048-1054 ◽  
Author(s):  
Tessa M. van ’t Klooster ◽  
Jeanet M. Kemmeren ◽  
Hester E. de Melker ◽  
Patricia E. Vermeer-de Bondt ◽  
Nicoline A.T. van der Maas
Keyword(s):  
Young Children ◽  
The Netherlands ◽  
Pandemic Influenza ◽  
Influenza A ◽  
H1n1 Vaccine ◽  
Influenza A H1n1

Pandemic influenza A (H1N1) vaccination in The Netherlands: Parental reasoning underlying child vaccination choices

Vaccine ◽  
2011 ◽  
Vol 29 (37) ◽  
pp. 6226-6235 ◽  
Author(s):  
Marloes Bults ◽  
Desirée J.M.A. Beaujean ◽  
Jan Hendrik Richardus ◽  
Jim E. van Steenbergen ◽  
Hélène A.C.M. Voeten
Keyword(s):  
The Netherlands ◽  
Pandemic Influenza ◽  
Influenza A ◽  
Influenza A H1n1 ◽  
Child Vaccination

scholarly journals 2009 Influenza A (H1N1) in Panama: a disease affecting children with a benign course

2011 ◽  
Vol 5 (09) ◽  
pp. 664-668 ◽  
Author(s):  
Javier Nieto- Guevara ◽  
Nestor Sosa ◽  
Mariana Garcia ◽  
Alex Martinez ◽  
Marlene Castillo
Keyword(s):  
Pandemic Influenza ◽  
Influenza A ◽  
Case Fatality Rate ◽  
Case Fatality ◽  
Nasopharyngeal Swab ◽  
Fatality Rate ◽  
Female Ratio ◽  
Severe Acute Respiratory Infection ◽  
Influenza A H1n1 ◽  
Epidemiological Characteristics

Introduction: Pandemic Influenza A (H1N1) was identified as the major febrile respiratory illness worldwide during the year 2009.  We present a report of its clinical and epidemiological characteristics in children and adults in Panama.  Methodology: A descriptive study from the database of the Gorgas Memorial Institute is presented.   We included patients with severe acute respiratory infection in whom a nasopharyngeal swab was positive by real-time RT-PCR for 2009 Influenza A (H1N1) pandemic virus and negative for seasonal influenza A H1 and H3. Results: From 26 April 2009 to 11 January 2010, confirmed cases of pandemic 2009 Influenza A (H1N1) reached 806. The overall incident rate was 23.35 cases of pandemic influenza per 100,000 habitants, with the highest incidence found in the age group between 10 to 14 years of age (58.67 cases per 100,000 habitants).  The median age for the cases was 13 years (ages ranging from one day to 88 years) and 71% were from the Panama City Metropolitan Area.  The male/female ratio was 1:1 and 90% were managed as out-patients.   An influenza-like syndrome was the presenting diagnosis in 99% of the cases.  Fever and cough were the most frequent symptoms reported in all age groups. The case fatality rate was 0.3 cases per 100,000 habitants. Conclusion: The 2009 Influenza A (H1N1) outbreak affected mainly the pediatric population, had a low case fatality rate, and was the predominant virus circulating in Panama during the 2009/2010 flu season

scholarly journals Risk factors for disease severity among hospitalised patients with 2009 pandemic influenza A (H1N1) in Spain, April – December 2009

2010 ◽  
Vol 15 (38) ◽  
Author(s):  
P Santa-Olalla Peralta ◽  
M Cortes-García ◽  
M Vicente-Herrero ◽  
C Castrillo-Villamandos ◽  
P Arias-Bohigas ◽  
...  
Keyword(s):  
Risk Factors ◽  
Disease Severity ◽  
Pandemic Influenza ◽  
Influenza A ◽  
Hospitalised Patients ◽  
Influenza A H1n1

scholarly journals Incidence and Epidemiological Characteristics of 2009 Pandemic Influenza A (H1N1) Among School-Based Populations in Korea

2012 ◽  
Vol 44 (6) ◽  
pp. 431 ◽  
Author(s):  
Hyun Jung Kim ◽  
Byung Chul Chun ◽  
Hoo Jae Hann ◽  
Jang Wook Sohn ◽  
Sae Yoon Kee ◽  
...  
Keyword(s):  
Pandemic Influenza ◽  
Influenza A ◽  
School Based ◽  
Influenza A H1n1 ◽  
Epidemiological Characteristics

scholarly journals Surveillance of Influenza A and the pandemic influenza A (H1N1) 2009 in sewage and surface water in the Netherlands

2011 ◽  
Vol 9 (3) ◽  
pp. 434-442 ◽  
Author(s):  
Leo Heijnen ◽  
Gertjan Medema
Keyword(s):  
Surface Water ◽  
The Netherlands ◽  
Pandemic Influenza ◽  
Influenza A ◽  
Water Cycle ◽  
Gastrointestinal Symptoms ◽  
Influenza Viruses ◽  
Influenza A Viruses ◽  
Infected People ◽  
Influenza A H1n1

The role of the water cycle in spreading human pathogenic influenza viruses is poorly studied and is not considered to be significant. However, gastrointestinal symptoms developed in a large proportion of influenza A (H1N1) 2009 virus infected people during the pandemic in 2009 and fecal shedding was reported. This fecal route could potentially play a role in the entry of human pathogenic influenza viruses in to the water cycle. Monitoring of influenza viruses in sewage and surface water during the pandemic in 2009 showed that influenza A viruses were detected in sewage and surface water. However, the pandemic influenza A (H1N1) 2009 virus was not detected. These findings imply that the water cycle did not play a relevant role in spreading the pandemic influenza virus during the epidemic in the Netherlands in 2009. Analyses of deliberately contaminated water samples confirmed the ability of quantitative RT-PCR to detect influenza viruses in sewage samples whereas the analysis of large volumes of surface water was strongly hampered by the presence of PCR-inhibiting substances.

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