Table 4.

Changes in number of cases, number of deaths, and mortality for 10 respiratory infectious diseases in 2020 compared to the 5 years before the COVID-19 period in China.

Diseases	Pre-COVID-19 period		2020		2020 vs. pre-COVID-19 period
	Average yearly no. of cases (average no. of deaths)	Average yearly mortality (per 100,000)	Average no. of cases (average no. of deaths)	Mortality (per 100,000)	Changes (%)	P -value
All 10 RIDs	2,227,044 (2,873)	0.208468	1,969,082 (1,995)	0.142167	−31.80	0.006‡
TB	826,910 (2,742)	0.198962	670,538 (1,919)	0.136751	−31.27	0.01†
Epidemic cerebrospinal meningitis	108 (12)	0.000871	50 (3)	0.000214	−75.45	0.045†
Seasonal influenza	1,052,505 (106)	0.007691	1,145,278 (70)	0.004988	−35.14	0.491
pH1N1*	0 (0)	0.000000	0 (0)	0.000000	(—)	(—)
Measles	16,008 (12)	0.000871	856 (0)	0.000000	−100.00	0.655
Avian influenza H5N1	2 (1)	0.000073	0 (0)	0.000000	−100.00	0.367
Pertussis	14,944 (2)	0.000145	4,475 (1)	0.000071	−50.90	0.751
Mumps	233,922 (1)	0.000073	129,120 (1)	0.000071	−1.79	0.208
Scarlet fever	72,501 (1)	0.000073	16,564 (1)	0.000071	−1.79	0.208
Rubella	10,149 (1)	0.000073	2,201 (0)	0.000000	−100.00	0.655

Changes = (x₁ – x₂)/x₂ × 100%, x₁: mortality in 2020; x₂: average yearly mortality pre-COVID-19 period (between 2015 and 2019).

“–” means “decreased”; (—), no cases or numbers reported in the system for each infectious disease.

^*pH1N1, the full period from 2009 to 2013. The P-value was computed through Mann-Whitney U-test.

^†P < 0.05 and^‡P < 0.01.