Standardization activities exist for a range of e-health services concerning personal and public health, and many standard results are available. Yet these standards sometimes cover the same use area and it is difficult to select appropriate ones. This paper discusses e-health standardization activities and an e-health ecosystem targeting public health in anticipation of its continuous evolution. We introduce a portable health clinic with body area network (BAN-PHC) technologies providing affordable healthcare and telemedicine as a candidate service for health screenings that can be useful for emerging nations, which collectively have a massive population of around 5.8 billion people. The effectiveness of such health checks is evaluated through actual mass examinations in Bangladesh, and key features to accelerating standards deployment are raised. This success leads to adoption of the standards in emerging nations and can be reversely deployed in developed nations. Machine-to-machine (M2M) technologies are also important for providing scalable solutions and accelerating global integration of back-end systems. We propose integration of two key enablers - BAN-PHC and M2M technologies - to provide evolved services for quick and broad standard acceptance from emerging nations to developed nations.