According to the World Health Organization (WHO), at least 154 million lives have been saved by vaccination efforts worldwide over the past 50 years.

“On the occasion of World Immunization Week, let us all take a pledge to ensure that everyone gets appropriate vaccination as needed. Vaccination has saved billions of lives,” said Dr. Ravindra Gupta, Head of the Department of Internal Medicine, CK. Birla Hospital, Gurugram told IANS.

“Our immune system fights pathogens and protects us from infectious diseases. Vaccination helps our immune system fight these infections and protects aging adults and children from serious infections,” said Dr. Agam Vora, general secretary, Association of Physicians of India.Vaccination progress has been dealt a serious blow to nearly 2 million children who missed one or more vaccinations during the recent global COVID-19 pandemic. Additionally, escalating conflicts, economic recession and increased vaccine hesitancy are some of the threats to efforts to reach children.

According to WHO, "As a result, the world is witnessing a sudden outbreak of diphtheria and measles, diseases that until now were almost at our disposal."

Vaccination eliminated smallpox and virtually eliminated polio. Despite childhood vaccinations being highly successful, adult vaccinations for pneumonia, various types of flu viruses, COVID, cervical cancer and now herpes zoster are lagging behind.Dr Agam told IANS that vaccination could be important in protecting older adults from serious infections and their complications such as shingles, pneumonia, influenza. This is because the immune system also begins to age and no longer functions.

Similarly, children under five years of age also need vaccination as their immune system is not fully developed. This makes them vulnerable to many infections that can hinder their growth and development, the doctor said.