oai:pubmedcentral.nih.gov:8256...
BioMed Central
BMC Infectious Diseases
2021
05/12/2023
BACKGROUND: Available data on influenza burden across Southeast Asia are largely limited to pediatric populations, with inconsistent findings.
METHODS: We conducted a multicenter, hospital-based active surveillance study of adults in Malaysia with community-acquired pneumonia (CAP), acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and acute exacerbation of asthma (AEBA), who had influenza-like illness ≤10 days before hospitalization.
We estimated the rate of laboratory-confirmed influenza and associated complications over 13 months (July 2018–August 2019) and described the distribution of causative influenza strains.
We evaluated predictors of laboratory-confirmed influenza and severe clinical outcomes using multivariate analysis.
RESULTS: Of 1106 included patients, 114 (10.3%) were influenza-positive; most were influenza A (85.1%), with A/H1N1pdm09 being the predominant circulating strain during the study following a shift from A/H3N2 from January–February 2019 onwards.
In multivariate analyses, an absence of comorbidities (none versus any comorbidity [OR (95%CI), 0.565 (0.329–0.970)], p = 0.038) and of dyspnea (0.544 (0.341–0.868)], p = 0.011) were associated with increased risk of influenza positivity.
Overall, 184/1106 (16.6%) patients were admitted to intensive care or high-dependency units (ICU/HDU) (13.2% were influenza positive) and 26/1106 (2.4%) died (2.6% were influenza positive).
Males were more likely to have a severe outcome (ICU/HDU admission or death).
CONCLUSIONS: Influenza was a significant contributor to hospitalizations associated with CAP, AECOPD and AEBA.
However, it was not associated with ICU/HDU admission in this population.
Study registration, NMRR ID: NMRR-17-889-35,174.
SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12879-021-06360-9.
Pang, Yong Kek,Ismail, Ahmad Izuanuddin,Chan, Yoke Fun,Cheong, Adelina,Chong, Yoong Min,Doshi, Paras,Lau, Joanne Zhi Han,Khor, Jean,Wang, Lilian Phei Lian,Leong, Chee Loon,Musa, Aisya Natasya,Ng, Kee Sing,Poh, Mau Ern,Sam, I-Ching,Tan, Jiunn Liang,Zim, Mohd Arif Mohd,Taurel, Anne-Frieda, 2021, Influenza in Malaysian adult patients hospitalized with community-acquired pneumonia, acute exacerbation of chronic obstructive pulmonary disease or asthma: a multicenter, active surveillance study, BioMed Central