What COVID leaves behind.

Not proof. Just curves. The possible aftermath of COVID, in official numbers nobody talks about.

2+ COVID infections: 1.76× the odds of a new chronic condition

In a survey of 8,809 Canadian adults (2020–2023), those with two or more COVID infections had 1.76 times the odds of a newly diagnosed …

COVID-19ReinfectionLong-term EffectsChronic DiseaseAdultsCanadaZakaria et al., Canada Communicable Disease Report 52(9), January 2020 – June 2023

New high blood pressure diagnoses in Canada +8.1% since 2019–20

New high blood pressure diagnoses in Canada rose from 2,093 to 2,262 per 100,000 between fiscal years 2019–20 and 2022–23 (+8.1%, …

High Blood PressureCardiovascularAdultsCanadaZakaria et al., Canada Communicable Disease Report 52(9), citing CCDSS data, Fiscal years 2019–20 to 2022–23

US heart disease deaths: 694,708 in 2025, +5.4% vs 2019

Heart disease killed 694,708 people in the US in 2025 (provisional), 5.4% more than in 2019. Deaths jumped by about 38,000 in 2020, peaked …

Heart DiseaseCardiovascularMortalityAdultsUSANCHS, Mortality in the United States: Provisional Data, 2025 (VSRR No. 44), 2014–2025 (2025 provisional)

1 in 25 Belgians has Long COVID, peaking at 7% in their late 40s and early 50s

In Belgium's national health survey, 4.2% of people aged 15 and over report Long COVID, with symptoms lasting at least three months after …

Long COVIDCOVID-19Long-term EffectsMiddle AgeWomenBelgiumSciensano, Belgian Health Interview Survey (COVID-19 module), 2023–2024

US measles cases: 2,289 in 2025, 4,410 in 2026 so far (+246% vs 2019)

Confirmed measles cases in the US per year since 2000. After just 13 cases in 2020, the count rose to 2,289 in 2025 and already 4,410 in …

MeaslesInfectious DiseasesViral InfectionsVaccinationUSACDC, Measles Cases and Outbreaks, 2000–2026 (2026 as of Oct 15, 2026)

US stroke deaths, ages 45–64: 21.7 per 100,000 in 2019, 24.4 in 2021 (+12%)

The chart shows US stroke deaths per 100,000 adults aged 45–64. After falling to 20.2 in 2012 and creeping up to 21.7 in 2019, the rate …

StrokeCardiovascularBrainMortalityMiddle AgeUSACurtin, NCHS Data Brief No. 505, 2002–2022

Brain-infecting mold in the US: 8.4 detections per 1,000 samples in 2017–2023, 26 in 2025 (+210%)

A US reference lab found 1–5 cases a year of the brain-infecting mold Cladophialophora bantiana from 2009 to 2023, then 8 in 2024 and 14 in …

Fungal InfectionsInfectious DiseasesBrainNeurologyUSANelson et al., CDC MMWR, 2009–July 2026

Swedish women aged 20–24 on diabetes drugs: 9.1 per 1,000 in 2019, 26.4 in 2025 (+190%)

Women aged 20–24 in Sweden filling at least one diabetes prescription per year rose from 9.1 per 1,000 in 2019 to 26.4 in 2025, after a slow …

DiabetesMetabolicMedicationYoung AdultsWomenSwedenSocialstyrelsen, Statistikdatabas för läkemedel, 2010–2025

OECD average maths score in PISA: 494 in 2012, 463 in 2025 (−6%)

The OECD average maths score of 15-year-olds fell from 494 points in 2012 to 463 in 2025, with reading at 461 and science at 482, the lowest …

EducationSchool PerformanceCognitionTeenagersWorldwideOECD, PISA 2025 Results (Volume I), 2000–2025

Sick days per employee in Germany: 10.9 in 2019, 14.8 in 2024 (+36%)

Employees in Germany were off sick for 10.9 working days in 2019 and 14.8 days in 2024, after a peak of 15.1 days in 2023. Part of the jump …

Sick LeaveLabour MarketEconomyAdultsGermanyIAB Kurzbericht 3/2025, 2018–2024

Teenage girls in Germany since 2019: anxiety disorders +53%, eating disorders +38%, depression +27%

Among German girls aged 15 to 17, treatment for anxiety disorders rose by 53% between 2019 and 2024, eating disorders by 38% and depression …

Mental HealthAnxietyDepressionEating DisordersTeenagersGermanyDAK-Gesundheit, Kinder- und Jugendreport, 2019–2024

Gonorrhoea cases in Finland: 604 in 2019, 2,113 in 2025 (+250%)

Reported gonorrhoea cases in Finland per year. After two decades at roughly 200–300 cases a year, the count rose from 604 in 2019 to 2,113 …

GonorrhoeaSexually Transmitted InfectionsInfectious DiseasesBacterial InfectionsFinlandTHL (Finnish Institute for Health and Welfare), Infectious Diseases Register, 1995–2025

After COVID-19, people were 21% more likely to start allergy medication

In a matched cohort of 778,362 people in Japan, those who had COVID-19 started new allergy medication (antihistamines, leukotriene blockers, …

COVID-19AllergyImmune SystemLong-term EffectsOlder AdultsJapanMiyamori et al., BMC Public Health, 2026

COVID-19 ranks among the deadliest disease outbreaks in history

The chart compares the deadliest pandemics and epidemics by estimated number of victims. COVID-19 is estimated at 19–36 million deaths (as …

COVID-19MortalityPandemicsHistoryWorldwideStatista (Gavi, WHO, The Economist), May 2024

Patients waiting > 12h

Patients waiting longer than 12 hours after the decision to admit in UK.

HospitalHealthcare SystemEmergency CareUKnuffieldtrust.org.uk

Strokes in adults aged 20–54: 33.9 per 100,000 in 1993/94, 62.2 in 2020 (+83%)

The chart shows first-ever strokes per 100,000 people per year in the Greater Cincinnati / Northern Kentucky region. Among adults aged 20–54 …

StrokeCardiovascularBlood ClottingBloodBrainYoung AdultsFisher et al., Neurology, 1993–2020

2.78 million people in the UK are economically inactive due to long-term sickness

The chart shows the number of people in the UK who are economically inactive because of long-term sickness, from 1993 to June 2026. After …

Long-term SicknessLabour MarketEconomyUKThe Spectator, ONS (series LF69), June 2026

US labor force with a disability: about 6 million in the 2010s, about 9 million now (+50%)

The chart shows the civilian labor force with a disability (people aged 16 and over who are working or looking for work) in the US. After …

DisabilityLabour MarketEconomyUSAU.S. Bureau of Labor Statistics via FRED, 2026