Disease surveillance helps us detect disease cases, understand burden of disease and risk factors, provide the basis for timely and informed decision-making, guide control measures, and monitor impacts. Since the onset of COVID-19, surveillance efforts have worked to provide real-time tracking and forecast data, despite challenges with diagnostic capacity, case reporting, insufficient contact tracing, and fragmented data systems. COVID-19 has highlighted the need to invest in modern data systems, expand and skill up the workforce, and ensure data reporting and interpretation retain high ethical and epidemiological standards.

The authority to act to protect and promote the public's health has emerged over the course of our Nation’s history, and has enabled many of modern public health’s greatest achievements. Today, public health agencies use their authority to promote health, prevent the spread of infectious disease, protect against environmental hazards, advance equity and assure local public health infrastructure and health services. During declared emergencies, state and federal authorities have broader powers to act to assist governments, suspend or modify legal requirements, pass and enforce law and expend funds for the health, safety and welfare of society. Recently, some states have moved to limit public health powers. Such efforts pose a mounting challenge for public health’s response to COVID-19 and future threats.

The COVID-19 pandemic has put immense pressure on frontline and public health workers, exacerbating myriad mental health concerns, including stress, depression, and burnout. As with COVID-19 itself, impacts have disproportionately affected certain populations more likely to hold frontline positions, including women, LatinX people, and people of color. These challenges, compounded with broader issues affecting the workforce, undermine the capacities of frontline and public health workers to provide essential services. Key strategies for supporting frontline and public health workers include building a culture of caring across leadership and organizations, improving employment practices and working conditions, and fostering social support among workers.

Vaccination is one of public health’s most successful tools for preventing and controlling the spread of infectious diseases and, increasingly, cancers and chronic diseases too. Immunization is an effective and cost-efficient strategy that prevents sickness and death in all age groups and saves billions of dollars each year. The COVID-19 epidemic and recent outbreaks of measles and other preventable infectious diseases underscore the importance of vaccines and sustaining high vaccination rates. Work is needed to ensure that people of all ages receive a complete series of the vaccines they need.