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Related Concept Videos

Clinical Trials: Overview01:11

Clinical Trials: Overview

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

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Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...
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Vaccinations01:51

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Overview
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Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

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Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
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Clinical Trials01:16

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Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
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Preclinical Development: Overview01:28

Preclinical Development: Overview

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Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
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Updated: Jun 22, 2025

The Participant-Reported Implementation Update and Score PRIUS: A Novel Method for Capturing Implementation-Related Data Over Time
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The COVID-19 Vaccines Evaluation Program: Implementation, Management, and Experiences, 2021-2023.

Tingting Yan1, Hui Zheng1, Mingshuang Li1

  • 1National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases (NITFID). National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing, China.

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|July 5, 2024
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China’s COVID-19 vaccines showed real-world effectiveness in international studies. The COVID-19 Vaccines Evaluation Program (COVEP) confirmed vaccine performance, boosting global confidence.

Keywords:
experiencesimplementationmanagementthe COVID-19 Vaccines Evaluation Program (COVEP)

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Area of Science:

  • Public Health
  • Vaccinology
  • Epidemiology

Background:

  • China's domestic COVID-19 vaccines were approved and distributed globally in 2021.
  • Low domestic infection rates necessitated international studies to assess real-world vaccine effectiveness.
  • The China Center for Disease Control and Prevention (China CDC) initiated the COVID-19 Vaccines Evaluation Program (COVEP).

Purpose of the Study:

  • To evaluate the real-world effectiveness of China's domestically produced COVID-19 vaccines.
  • To foster international research collaborations for public health initiatives.
  • To address critical questions regarding vaccine performance across diverse global settings.

Main Methods:

  • Established research collaborations with health institutes across five WHO regions.
  • Implemented ten cooperative research agreements under the COVEP framework.
  • Conducted international studies to gather real-world data on vaccine efficacy.

Main Results:

  • COVEP findings reinforced domestic and global confidence in the effectiveness of Chinese COVID-19 vaccines.
  • International study outcomes were often consistent with subsequent studies conducted within China.
  • The program successfully generated crucial data on vaccine performance in varied populations.

Conclusions:

  • COVEP demonstrated the real-world effectiveness of China's COVID-19 vaccines.
  • The program established a novel model for international research collaboration on public health issues.
  • COVEP's success aligns with China CDC's national disease control and prevention strategies.