Publication:

COVID-19 and its resurgence, public behavior, and global response: lessons learnt

COVID-19 has caused significant damage to the social, emotional, and economic well-being of populations worldwide. Recent resurgences in several countries necessitate a focused review of the factors driving repeated waves of infection. This narrative review examines the evolution of the virus over time, behaviours of the public, and how governments implemented policies and systems to counter COVID-19. Key topics include the evolution of SARS‑CoV‑2 variants, the role of human behaviour in transmission, and the effectiveness and limitations of vaccines against rapidly evolving lineages. The review suggests that although vaccines have played a crucial role in mitigating the severity of symptoms and the spread of the virus, their effectiveness may decline over time due to waning immunity and the emergence of rapid viral mutations and newer strains. Moreover, asymptomatic infections can also exacerbate the spread of the virus without being recognized. Other social factors, including the spread of misinformation and behavioural complacency due to pandemic fatigue, also lead to an increase in the number of COVID cases. In 2025, given the emergence of new variants and the evolution of vaccines, this topic remains highly relevant. Understanding these patterns can help improve public health decisions and preparedness for future pandemics.