Question explored with the scientific record
was covid not deadly enough that we should have ignored it or treated it like the flu/not changed anything and not had extra public health measures? or was it deadly enough some measures made sense and were neccessary, but the exact measure and how much exactly was neccessary/weather or not the exact measures implemented were nessecary or not is more disputed?
The short version: COVID-19 was far deadlier than influenza, and some measures were clearly necessary, but the evidence shows that school closures were among the least cost-effective and most harmful interventions, while mask mandates, testing, tracing, and social distancing gave the most benefit per unit of harm.
The first question—was COVID-19 deadly enough to justify any measures at all—is settled by the numbers. A 2025 Bayesian analysis across US states estimated that non-pharmaceutical interventions (NPIs) averted about 860,000 deaths in 2020 alone [37]. The infection fatality rate was about 0.78%, roughly 10 to 20 times higher than seasonal influenza [37]. Early case-fatality rates in Australia were around 1%, with a median age at death of 79 and heavy concentration in aged-care facilities [1]. This was not the flu. Some response was warranted.
The second question—which measures were necessary and which were overreach—is where the evidence gets specific and uncomfortable. The same 2025 cost-effectiveness study found that school closures were the least cost-effective NPI, costing an estimated $2 trillion in learning-loss and future GDP losses, while mask mandates, social distancing, and testing/tracing were the most effective [37]. A 2020 German surveillance study found school outbreaks were rare and small, with only 48 outbreaks out of 8,841 total, and cases per outbreak actually fell after partial reopening [34]. A 2021 US study comparing 50 states to 35 European countries found that the large US-EU death gap disappeared entirely once the timing and stringency of social distancing measures were accounted for, not school closures [36].
The harms of the most aggressive measures are documented across multiple studies. School closures and lockdowns increased chronic pain risk by 26% in quarantined populations [8], reduced academic hours from 7 to 4.6 per day while tripling screen time [28], and caused persistent employment and childcare crises for parents of young children [32]. A 2025 qualitative study of English secondary schools found that closures disrupted teaching, social life, safeguarding, and mental health with "widespread negative impacts" [33]. A 2025 Chinese study found that lifting restrictions was followed by a surge in childhood respiratory infections, including RSV and Mycoplasma pneumoniae, suggesting that prolonged suppression created an immunity debt that hit hardest when measures were relaxed [2, 3, 4, 5].
| Measure | Estimated effect on transmission | Estimated cost or harm |
|---|---|---|
| Mask mandates | 19% R0 reduction [37] | Low |
| Social distancing | 19% R0 reduction [37] | Moderate |
| Testing & tracing | 10% combined R0 reduction [37] | Moderate |
| School closures | 8% R0 reduction [37] | $2 trillion in lost GDP; increased screen time, reduced academics, mental health harm [28, 33, 37] |
| Stay-at-home orders | 13% additional reduction beyond other measures [17] | High (economic, mental health, chronic pain) [8, 32] |
My call: COVID-19 was deadly enough to justify targeted public health measures, but the evidence does not support blanket school closures or prolonged lockdowns as necessary or net-beneficial. The measures that worked best—masks, distancing, testing—were also the least disruptive. The measures that caused the most harm—school closures and stay-at-home orders—had the weakest evidence of necessity.
Confidence: moderate. The evidence for the overall benefit of NPIs is strong, but the evidence comparing specific measures to each other is model-based and observational, not from randomized trials. The cost estimates for school closures are projections, not measured outcomes.
Sources used 13
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COVID-19, Australia: Epidemiology Report 12: Reporting week ending 23:59 AEST 19 April 2020
Australia's weekly COVID-19 epidemiology update (week ending 19 April 2020) shows falling new case numbers, a crude case-fatality rate around 1%, predominant overseas acquisition with cruise-ship and aged-care outbreaks, and continued public health measures.
DOI: 10.33321/cdi.2020.44.36 -
Changes in infant respiratory pathogens pre-, during, and post-COVID-19 non-pharmacological interventions in Beijing
This study investigates the impact of non-pharmacological interventions during the COVID-19 pandemic on the respiratory pathogen profiles of hospitalized infants aged 0-3 months in Beijing, revealing significant changes in detection rates and types of pathogens before, during, a…
DOI: 10.1186/s13052-025-01848-5 -
Epidemiological and Clinical Characteristics of Respiratory Syncytial Virus Infection in Children in Hangzhou (2022–2023)
This study investigates the epidemiological and clinical characteristics of respiratory syncytial virus (HRSV) infections in children in Hangzhou, revealing a significant increase in positivity rates and changes in infection patterns following the relaxation of COVID-19 control …
DOI: 10.3390/pathogens14060603 -
Shifting epidemic trends and severity in pediatric Mycoplasma pneumoniae infections in the post-COVID-19 era
This study analyzes the impact of prolonged non-pharmaceutical interventions (NPIs) on the epidemiology and clinical severity of Mycoplasma pneumoniae infections in pediatric patients in Wuhan, China, revealing a significant increase in test positivity rates and disease severity…
DOI: 10.1186/s13052-025-02064-x -
Influence of COVID-19 public health restrictions on community-acquired pneumonia pathogens in children in Henan, China: a multicenter retrospective study
This multicenter retrospective study investigates the distribution of pathogens and epidemiological changes in children hospitalized with community-acquired pneumonia during and after COVID-19 public health restrictions in Henan, China, revealing significant shifts in pathogen p…
DOI: 10.1186/s12879-024-10268-5 -
The Impact of Quarantine on Pain Sensation among the General Population in China during the COVID-19 Pandemic
This nationwide study investigates the prevalence of constant pain symptoms among the general population in China during the COVID-19 pandemic and finds that long-term quarantine is associated with an increased risk of chronic pain, particularly among vulnerable groups with ment…
DOI: 10.3390/brainsci12010079 -
Inferring the effectiveness of government interventions against COVID-19
Using a semi-mechanistic Bayesian hierarchical model, the study estimates the individual effects of seven nonpharmaceutical interventions on COVID-19 transmission across 41 countries during January–May 2020, finding that closing schools/universities, limiting large gatherings, a…
DOI: 10.1126/science.abd9338 -
School closure during the coronavirus disease 2019 (COVID-19) pandemic – Impact on children's sleep
During Singapore's COVID-19 Circuit Breaker, school closures and home-based learning increased older children's sleep duration (with later bedtimes and wake times), especially in secondary and private schools, while time spent on academics dropped and screen time rose, suggestin…
DOI: 10.1016/j.sleep.2020.12.025 -
Gender Disparities in the Labour Market? Examining the COVID-19 Pandemic in Alberta
Alberta's second COVID-19 wave did not sustain gender-based employment gaps, but there were persistent, sizable reductions in hours among parents with young children, indicating a parental-care crisis rather than a purely gender-driven labor-market shock.
DOI: 10.55016/ojs/sppp.v14i1.72237 -
When Corona Infested Everything—A Qualitative Interview Study Exploring the Impact of COVID-19 Mitigation Measures on School Life from the Perspectives of English Secondary School Staff and Students
A qualitative, interview-based study in five English secondary schools (staff and students) examining how COVID-19 mitigation measures and school closures disrupted teaching, social life, safeguarding, and mental health, revealing widespread negative impacts and limited positive…
DOI: 10.3390/ijerph22060915 -
Surveillance of COVID-19 school outbreaks, Germany, March to August 2020
Germany's national surveillance data from January to August 2020 show COVID-19 school outbreaks were rare and typically small, with outbreaks and case counts smaller after partial reopening, suggesting school closures should be used cautiously and with other containment measures.
DOI: 10.2807/1560-7917.es.2020.25.38.2001645 -
Are COVID fatalities in the US higher than in the EU, and if so, why?
The study compares COVID-19 fatalities between US states and European countries and finds that the large US-EU gap in deaths largely disappears once demographic/economic factors and, crucially, the timing and stringency of social distancing measures are accounted for, suggesting…
DOI: 10.1007/s11150-020-09532-9 -
Optimal pandemic control strategies and cost-effectiveness of COVID-19 non-pharmaceutical interventions in the United States
A Bayesian two-stage analysis across US states in 2020 estimates the transmission-reduction and economic costs of 11 non-pharmaceutical interventions (NPIs), finding mask/testing/tracing and social distancing most cost-effective while school closures were not, and identifying an…
DOI: 10.1186/s44263-025-00189-z