The influence of COVID-19 prevention and control measures on the transmission and epidemic of influenza in Chongqing
China Tropical Medicine
; 23(4):378-382, 2023.
Artículo
en Chino
| GIM | ID: covidwho-20243598
ABSTRACT
Objective:
To evaluate the influence of coronavirus disease 2019 (COVID-19) prevention and control measures on the transmission and epidemic of influenza in Chongqing, so as to provide references for formulating targeted influenza prevention and control strategies.Methods:
The influenza surveillance data, during the year 2018 to 2020, were collected through the "China Influenza Surveillance Information System", and the seasonal characteristics of influenza epidemic were analyzed. The percentage of influenza like cases (ILI%) and influenza virus positive rate between 2020 and 2018-2019 were compared, so as to evaluate the impact of COVID-19 prevention and control measures on influenza epidemic characteristics.Results:
The annual proportions of ILI cases in Chongqing were respectively 3.53%, 2.23% and 1.2% from 2018 to 2020, while the positive rates of influenza virus were respectively 13.97%, 23.81% and 2.65%. The distribution trend of ILI% from 2018 to 2019 fluctuated were similar, but it continued to drop and remain at a low level since February 2020. The positive rate of influenza virus showed an epidemic peak from December to March in 2018-2019, also peaked from November 2019 to January 2020, but decreased to 0 in March. ILI% was positively correlated with the positive rate of influenza virus (r=0.404 8, P < 0.05). In 2020, compared with the same period of 2018-2019, the growth rate of ILI% was -66.09% and -46.32%, respectively. The positive rate of influenza virus in 2020 decreased by 81.03% and 88.87% compared with the same period of 2018-2019, respectively. The growth rates of influenza virus positive rate in January 2020 were decreased with a small rate of about 39.87%, and with a significantly decline of more than 93.65% from February. No influenza epidemic was found after March.Conclusions:
Since COVID-19 prevention and control measures were implemented in January 2020 in Chongqing, the ILI% and the positive rate of influenza virus in sentinel hospitals decreased significantly. In the season of high incidence of respiratory infectious diseases, personal protection and other measures can effectively reduce influenza virus infection.
epidemics; human diseases; influenza viruses; influenza; viral diseases; coronavirus disease 2019; disease transmission; disease prevention; disease control; epidemiology; disease surveys; public health; man; Severe acute respiratory syndrome coronavirus 2; Influenza A virus; Orthomyxoviridae; China; Chongqing; Homo; Hominidae; primates; mammals; vertebrates; Chordata; animals; eukaryotes; APEC countries; East Asia; Asia; high Human Development Index countries; upper-middle income countries; Severe acute respiratory syndrome-related coronavirus; Betacoronavirus; Coronavirinae; Coronaviridae; Nidovirales; positive-sense ssRNA Viruses; ssRNA Viruses; RNA Viruses; viruses; Influenzavirus A; negative-sense ssRNA Viruses; South Western China; People's Republic of China; flu; viral infections; SARS-CoV-2; Chongqing Shi; disease surveillance
Texto completo:
Disponible
Colección:
Bases de datos de organismos internacionales
Base de datos:
GIM
Tipo de estudio:
Estudio experimental
/
Estudio observacional
Idioma:
Chino
Revista:
China Tropical Medicine
Año:
2023
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS