ArticleBMC infectious diseases2025
Impact of vaccination on SARS-CoV-2 infections and long COVID symptoms: a cross-sectional study in China.
Article in BMC infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- Article
- Psychopathologies in post-COVID outpatients differ from a psychosomatic control sample in a cross-sectional study.Discover mental health · 2026Article
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Authors and funding
8 authors.
Funding
Abstract
backgroundFollowing the adjustment of the dynamic zero-COVID-19 strategy, China has witnessed a rapid increase in COVID-19 cases. However, the relationship between diverse vaccination statuses and the spectrum of symptom presentation, disease severity, and long-term post-COVID conditions remains to be fully understood. This study aimed to assess the impact of vaccination on the incidence of SARS-CoV-2 infections, the manifestation of acute symptoms, and the occurrence of long-term symptoms post-infection within the context of China's revised pandemic prevention and control measures.
methodsThis study investigated 6,572 participants from the Yichang COVID-19 Antibody Longitudinal Survey (YC-CALS) in March 2023, focusing on demographic and health-related information, including vaccination history, infection status, and symptomatology. Univariate and multivariate analysis methods were used to determine the correlations between vaccination status and COVID-19 outcomes.
resultsAmong the surveyed participants, 85.91% reported positive for SARS-CoV-2. Of those who were positive, 96.79% experienced at least one common symptom, with fever (79.34%), cough (62.56%), and fatigue (60.59%) being the most reported symptoms. Despite the high incidence of symptoms, only 2.05% of those who tested positive needed hospitalization. Importantly, symptoms such as palpitations, chest pain, and shortness of breath persisted beyond 90 days in certain individuals. Booster shots significantly reduced the risk of specific symptoms including dyspnea, eye soreness and fatigue, and gastrointestinal discomfort (P < 0.05). Vaccination beyond 12 months significantly increased symptoms such as decreased sense of smell, palpitations, and chest distress (P < 0.05). Additionally, the study found a positive correlation between the timing of vaccination and the development of long COVID symptoms, with individuals vaccinated more than 12 months prior exhibiting a higher likelihood of enduring symptoms such as fatigue (OR = 1.218, P = 0.023) and headache dizziness (OR = 1.244, P = 0.038) for over one month.
conclusionsThe findings highlight the critical importance of vaccination in controlling the spread of COVID-19 and reducing symptoms and disease prognosis, providing important insights for future vaccine policy.
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