Association of Primary and Booster Vaccination and Prior Infection With SARS-CoV-2 Infection and Severe COVID-19 Outcomes
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.COVID-19 vaccination and prior infection significantly reduce the risk of SARS-CoV-2 infection and severe outcomes. However, protection wanes over time, particularly against infection.
Area Of Science
- Epidemiology
- Infectious Diseases
- Public Health
Background
- Understanding the association between COVID-19 vaccination, prior SARS-CoV-2 infection, and subsequent infection risk is crucial for public health strategies.
- The duration and effectiveness of protection from primary vaccine series, boosters, and natural infection require ongoing evaluation.
Purpose Of The Study
- To estimate the time-varying association of primary and booster COVID-19 vaccination and prior SARS-CoV-2 infection with subsequent SARS-CoV-2 infection, hospitalization, and death.
- To inform prevention strategies by quantifying the protective effects of vaccination and prior infection over time.
Main Methods
- A large cohort study involving 10.6 million residents in North Carolina from March 2020 to June 2022.
- Analysis of COVID-19 primary vaccine series, boosters, and prior SARS-CoV-2 infection as exposures.
- Calculation of rate ratios (RR) for SARS-CoV-2 infection and hazard ratios (HR) for COVID-19-related hospitalization and death.
Main Results
- Primary vaccine series were associated with a reduced risk of infection (RR ~0.51-0.53) and significantly lower risks of hospitalization (HR ~0.27-0.35) and death (HR ~0.15-0.24).
- Booster doses further reduced infection risk (RR ~0.32-0.39 after 1 month, ~0.60-0.84 after 3 months) compared to primary vaccination.
- Prior SARS-CoV-2 infection also demonstrated significant protection against subsequent infection (RR ~0.23) and severe outcomes (HR ~0.10-0.11) after 4 months.
Conclusions
- Both COVID-19 vaccination (primary series and boosters) and prior infection are significantly associated with a lower risk of SARS-CoV-2 infection, hospitalization, and death.
- The protective effect wanes over time, particularly against infection, highlighting the need for updated vaccination strategies.
- Findings support the continued use of vaccination and reinforce the importance of prior infection in prevention strategies.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Overview
Vaccination is the administration of antigenic material from pathogens to confer immunity against a specific microorganism. Vaccination primes the immune system to recognize and mount an immune response faster and more effectively if the real pathogen is encountered. Vaccinations are one of the most efficient ways to protect both individual humans and the general public from disease. A growing anti-vaccination skepticism risks the successes of vaccination programs that helped reduce...
Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
• Pleurisy: indicates the inflammation of the pleura, which causes chest pain and discomfort.
• Pleural Effusion: indicates fluid buildup in the pleural space.
• Atelectasis: Partial collapse of a lung lobe due to mucus blockage or external compression.
• Bacteremia: Bacterial infection entering the bloodstream, commonly seen with...
The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
The pathophysiology of pneumonia involves the following steps:
• Inhalation of Infectious Agents: Pneumonia typically begins when pathogenic organisms (bacteria, viruses, fungi) are inhaled or aspirated into the lower respiratory tract.
• Overcoming Lung Defenses: Ideally, the respiratory tract has defense mechanisms like mucociliary clearance and cough reflex to prevent the establishment of pathogenic organisms. If these defenses are compromised, or the pathogen is highly...
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Confounding in statistical epidemiology represents a pivotal challenge, referring to the distortion in the perceived relationship between an exposure and an outcome due to the presence of a third variable, known as a confounder. This variable is associated with both the exposure and the outcome but is not a direct link in their causal chain. Its presence can lead to erroneous interpretations of the exposure's effect, either exaggerating or underestimating the true association. This...