Table 1 Induced infectious diseases during COVID-19

1

Adlhoch [9]

Editorial

European region

Interseasonal weeks 21–39 2014–2020

*

*

2

Arellanossoto [10]

Cross-sectional

Mexico

Data from 2016 to 2017 season to the 2019–2020 season from epidemiological week 40 to week 30

*

3

Chan [11]

Cross-sectional

Taiwan

Data from 25 calendar weeks of the influenza season for four years (2016–20)

*

*

4

Chen [12]

Cross-sectional

Taiwan

Extracted the reported case numbers for measles between January and August from 2015 to 2020 for comparison

measles

5

Cowling [13]

Cohort

Hong Kong

Data obtained from 60 general outpatients clinics/and from public hospitals

*

6

Enserink [14]

Cross-sectional

Netherlands

Data obtained from nursing homes

*

7

Galvin [15]

Short communication (editorial)

Taiwan

–

*

8

Hsu [16]

Letter to editor

Taiwan

Data from influenza season 2018 to 2019 and 2019 to 2020

*

9

Itaya [17]

Cross-sectional

11 countries

Extraction of weekly reports of seasonal influenza data from 2014–2015 season to the 2019–2020 season from epidemiological week 40 to week 10

*

10

Komiya [18]

Letter to editor

Japan

Data from acid-fast bacterial cultures from January to May in 2020 with the same period in 2017, 2018 and 2019

*

11

Kuo [6]

Cross-sectional

Taiwan

Comparison of data from the first 12 weeks of 2020 with data from the same period of 2019

*

Varicella

12

Lai [19]

Letter to editor

Taiwan

Data obtained from NIDs for infectious disease between January and October in 2019 and 2020 for comparison

*

*

*

11 infectious disease:varicella/legionella. Mumps/Q fever/meningococcal meningitis/hanta virous/measles/rubella/pertussis (14 diseases totally)

13

Lai [20]

Letter to editor

Taiwan

Data on infectious disease obtained (first 20 calendar weeks of 2020 and compared with the same period of 2017, 2018 and 2019

*

14

Lee [21]

Cross-sectional

Korea

National influenza surveillance data were compared between 7 sequential seasons

*

15

Lee [5]

Cross-sectional

Taiwan

Data obtained from 181 hospitals (a comparison the number of outpatient visits for influenza, pneumonia, enterovirus infection and scarlet fever (week 40 in 2019 through week 18 in 2020)

*

*

Scarlet fever /pneumonia

16

Lim [22]

Letter to the editor

Singapore

Routine infectious disease surveillance—urinary streptococcal antigen tests + notifications submitted to the Ministry of Health for IPD, 2010 to 2020 (e-weeks 1–27)

*

*

17

Noh [23]

Cross-sectional

Korea

Data obtained from Korea Centers for Disease Control and Prevention (KCDC)

From Sep 1st, 2019–2018 to Apr 2020

*

18

Olsen [24]

CDC Report

USA, Australia, Chile, South Africa

a) Data obtained from 300 U.S. clinical laboratories—WHO Collaborating Laboratories System + National Respiratory and Enteric Virus Surveillance System, Sep 29th, 2019 to Feb 29th, 2020 Vs. Mar 1st to May16th, 2020

b) Laboratory data from clinical and surveillance platforms reported from Australia, Chile, and South Africa to WHO’s FluNet platform, April–July (weeks 14–31) 2017–2020

*

19

Oster [25]

Letter to the editor

Israel

Patients hospitalized at the Hadassah Medical Center during April–August 2020 vs. total numbers observed in the previous 3 years

*

*

*

Parainfluenza 1,2,3. RSV. Mycoplasma pneumonia. Bordetella pertussis

20

Rana [26]

Letter to the editor

Pakistan

Data based on the surveillance records available at NIH Islamabad. Data for non-infectious respiratory diseases obtained from the chest care clinic Islamabad, 2019–2020

*

*

*

*

RSV, measles, rubella, pertussis, diphtheria, EBV, H. influenza, VZV

21

Sakamoto [8]

Research

Japan

Data obtained from the National Institute of Infectious Diseases Japan from 5000 sentinel centers between 2014 and Mar 15th, 2020

*

22

Singh [27]

Brief report

USA (Wisconsin)

Data from 2015–2020 retrieved from academic health system laboratory in southeastern Wisconsin

*

23

Soo [28]

Cross-sectional

Singapore

Routine sentinel surveillance data on ILI from a national network of primary care clinics and the National Public Health Laboratory, comparison of influenza activity between epidemiologic weeks 1–4 and weeks 5–9 of 2020 Vs. 2016–2019

*

24

Tan [29]

Letter to the editor

Singapore

Laboratory confirmed (16-target PCR on oropharyngeal specimen) community-onset respiratory viruses that were admitted to Singapore general hospital from Jan 1st, 2017 to Jul 1st, 2020

*

*

*

*

*

RSV A/B, Parainfluenza viruses 1–4, metapneumovirus, human coronavirus OC43/229E/NL63, human bocavirus 1–4

25

Wong [30]

Cross-sectional

Hong Kong, China

Surveillance data obtained from the Hong Kong Government Centre for Health Protection between 2019 and 2020

*

26

Wu [31]

Letter to the editor

China

Data obtained from the Chinese National Influenza Center from 2019 to 2020

*

27

Wu [32]

Letter to the editor

China

Data obtained from the Chinese National Influenza Center, Influenza-like illness samples, 2020

*

28

Wu [33]

Letter to the editor

Taiwan

National data of critical/severe influenza diseases from Taiwan CDC and local data in a university-affiliated hospital in southern Taiwan, 2019–2020

*

29

Young [34]

Letter to the editor

China, Italy and the USA

influenza incidence was obtained from the WHO website from 2015 to 2019 vs. 2020

*