From Polio to COVID-19: Examining the Impact of Pandemics on Childhood Vaccination Programs

"By learning from past experiences and implementing effective strategies, we can ensure that vaccination programs continue to protect the health of children and adolescents during pandemics and beyond."

This review article examines the impact of pandemics on childhood vaccination programmes, specifically looking at the examples of polio and coronavirus disease 2019 (COVID-19). It highlights the need to address challenges posted by these pandemics to prevent a resurgence of vaccine-preventable diseases. Furthermore, the article discusses the lessons learned from these pandemics, such as the importance of fostering global collaboration, ensuring vaccine equity, addressing vaccine hesitancy, advancing pandemic preparedness, and embracing technology.

The methodology for this review article included a literature search of academic databases, such as PubMed, Web of Science, and Scopus, to identify relevant articles, reviews, and reports related to the impact of pandemics on childhood vaccination programmes. The search encompassed articles published from 2010 to the present. It utilised specific keywords, such as "global collaboration", "vaccine hesitancy", "covid-19", "polio", "childhood vaccination", and "pandemics". Ultimately, 68 articles were included in the full analysis.

Based on the literature, the article provides a comprehensive overview of the history of polio vaccination programmes, including efforts on the part of the Global Polio Eradication Initiative (GPEI), and the progress made in reducing the number of polio cases worldwide. It also looks at the challenges of eradicating the disease and the barriers to vaccine uptake. For example, vaccine hesitancy (reluctance or refusal to vaccinate despite availability) was one of the most significant challenges encountered in some communities. Community leaders played a vital role in promoting vaccination campaigns and encouraging parents to vaccinate their children. This approach was more effective in areas where there is mistrust of vaccines due to cultural or religious beliefs.

One lesson learned from polio is the importance of coordination among stakeholders involved in vaccination programmes, including governments, health organisations, and community groups. This coordination is essential in delivering vaccines to remote and underserved communities. Another lesson is the significance of community engagement, as vaccination programmes' success often depends on local communities' involvement and support.

Next, the article reviews the impact of the COVID-19 pandemic on childhood vaccination programmes, examining how, initially, the pandemic disrupted routine vaccination services due to lockdowns and travel restrictions that reduced access to medical facilities and vaccine uptake. The article also explores how the prioritisation of COVID-19 vaccines led to a diversion of resources away from routine childhood immunisation programmes. Looking through a long-term lens, the COVID-19 pandemic decreased the demand for other types of vaccines. For example, misinformation and conspiracy theories about COVID-19 vaccines have contributed to hesitancy among some populations about vaccination in general.

The article explores various public health responses to vaccination challenges during pandemics, such as maintaining routine vaccination services, prioritising high-risk groups, rapidly scaling up vaccine production, developing new vaccines, and increasing vaccine uptake, which can be achieved by developing public health campaigns, encouraging people to vaccinate, and addressing vaccine hesitancy through education and communication. Public health responses to vaccination challenges during pandemics require a coordinated effort from multiple stakeholders, including governments, pharmaceutical companies, healthcare providers, and the general public.

Based on experiences with polio and COVID-19, the article emphasises the need to prioritise vaccine equity and ensure that vulnerable populations have access to vaccines. In addition, the article stresses the importance of addressing vaccine hesitancy and providing effective communication and education about vaccines. The article also advocates for pandemic preparedness, emphasising the need to invest in research and development of vaccines for emerging infectious diseases. Finally, the article suggests embracing technology as a means to improve vaccine accessibility and distribution.

In conclusion: "As we move ahead, pandemic preparation must be given top priority in immunisation programmes. To create and implement efficient plans to stop and manage upcoming pandemics, there must be a coordinated worldwide effort...This includes providing appropriate vaccine stocks, training and educating healthcare professionals and creating efficient communication plans to encourage vaccination uptake and manage vaccine hesitancy..."