Blockchain technology has an enormous scope to revamp the healthcare system in many ways as it improves the quality of healthcare by data sharing among all the participants, selective privacy and ensuring data safety. This paper explores the basics of blockchain, its applications, quality of experience and advantages in disease surveillance over the other widely used real-time and machine learning techniques. The other real-time surveillance systems lack scalability, security, interoperability, thus making blockchain as a choice for surveillance. Blockchain offers the capability of enhancing global health security and also can ensure the anonymity of patient data thereby aiding in healthcare research. The recent epidemics of re-emerging infections such as Ebola and Zika have raised many concerns regarding health security which resulted in strengthening the surveillance systems. We also discuss how blockchains can help in identifying the threats early and reporting them to health authorities for taking early preventive measures. Since the Global Health Security Agenda addresses global public health threats (both infectious and NCDs); strengthen the workforce and the systems; detect and respond rapidly and effectively to the disease threats; and elevate global health security as a priority. The blockchain has enormous potential to disrupt many current practices in traditional disease surveillance and health care research.

The objective of our study is to evaluate information about the national health programmes in India, available over the internet and to study the challenges faced while acquiring this information. To achieve our objective, we used the key words national health programmes OR public health programmes OR health programs AND India in Google from January 1-January 10 2012, to find information about the existing health programmes. We chose first 20 web links across all the three search terms to yield 60 websites, which were then reviewed for their relevance. Only 16 websites were found to be relevant that met the inclusion criteria. The study showed that there was inadequate information about the existing national health programmes in India. This suggests a need to develop a national public health IT portal that can disseminate information about the various health programmes in a more structured manner and which is tailored to the needs of diverse group of stakeholders.