Public health
Years: 26829BCE - Now
Public health is the science and art of preventing disease, prolonging life and improving quality of life through organized efforts and informed choices of society, organizations, public and private, communities and individuals".
Analyzing the determinants of health of a population and the threats it faces is the basis for public health.
The public can be as small as a handful of people or as large as a village or an entire city; in the case of a pandemic it may encompass several continents.
The concept of health takes into account physical, psychological, and social well-being.
As such, according to the World Health Organization, it is not merely the absence of disease or infirmity and more recently, a resource for everyday living.
Public health is an interdisciplinary field.
For example, epidemiology, biostatistics, social sciences and management of health services are all relevant.
Other important subfields include environmental health, community health, behavioral health, health economics, public policy, mental health, health education, occupational safety, gender issues in health, and sexual and reproductive health.
Public health aims to improve the quality of life through prevention and treatment of disease, including mental health.
This is done through the surveillance of cases and health indicators, and through the promotion of healthy behaviors.
Common public health initiatives include promotion of handwashing and breastfeeding, delivery of vaccinations, suicide prevention, and distribution of condoms to control the spread of sexually transmitted diseases.
Modern public health practice requires multidisciplinary teams of public health workers and professionals.
Teams might include epidemiologists, biostatisticians, medical assistants, public health nurses, midwives, medical microbiologists, economists, sociologists, geneticists, data managers, and physicians.
Depending on the need, environmental health officers or public health inspectors, bioethicists, and even veterinarians, gender experts, or sexual and reproductive health specialists might be called on.
Like in other nations, access to health care and public health initiatives are difficult challenges in developing countries.
Public health infrastructures are still forming in those countries.
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Cro-Magnon Burials and Evidence of Community Care
The intentional burials practiced by Cro-Magnons suggest that they possessed a knowledge of ritual and a concept of death and the afterlife. Graves containing necklaces and tools indicate that these early humans may have engaged in ceremonial burial practices, possibly reflecting spiritual beliefs or cultural traditions. Alternatively, burial may have also been motivated by a practical understanding of disease, with bodies interred to prevent contamination of living spaces.
Pathology and the Hardships of Cro-Magnon Life
- Analysis of Cro-Magnon skeletons reveals that these early humans endured a physically demanding existence marked by frequent injuries and infections.
- Some individuals exhibited fused vertebrae in their necks, likely the result of traumatic injury, which would have caused chronic pain and limited mobility.
- One adult female found at a shelter had suffered a skull fracture but survived for an extended period, indicating that she received care and support from her community.
Community Support and Early Public Health
Given the severity of these injuries, survival would have been unlikely without social cooperation. This suggests that Cro-Magnons practiced community care, providing aid to the sick and injured, much like early forms of public health. Their willingness to support and protect vulnerable members of their group reflects a complex social structure and an understanding of collective well-being, qualities that played a crucial role in human survival and cultural evolution.
Upper South Asia (765–622 BCE): Regional Dynamics and Cultural Flourishing
Political Consolidation and Rivalries
Between 765 and 622 BCE, Upper South Asia witnessed further political consolidation and intense regional rivalries. Kingdoms such as the Kuru and Panchala in Haryana and western Uttar Pradesh experienced heightened competition and territorial disputes. Simultaneously, the Magadha kingdom in modern-day Bihar continued its steady rise, gradually becoming a formidable political force.
Socio-Religious Evolution
This age saw the further refinement of the caste system and the deepening complexity of Vedic rituals. Societal norms solidified around the Brahmins, Kshatriyas, Vaishyas, and Shudras, clearly defined within Vedic texts. Ritual sacrifices and ceremonies became increasingly elaborate, emphasizing the role of the priestly class.
Archaeological and Cultural Expressions
The Painted Grey Ware (PGW) culture remained prominent, its settlements and artifacts closely aligned with the historical accounts of the period. Additionally, the Northern Black Polished Ware (NBPW) began to appear, marking technological advancement and indicating evolving trade practices and urban sophistication in regions like Punjab, Haryana, and the central Gangetic plains.
Economic Integration and Expansion
Regional economies thrived, underpinned by advanced agricultural practices, extensive trade routes, and artisanal specialization. Key urban centers such as Taxila, now in Punjab, Pakistan, expanded significantly, facilitating extensive regional and interregional trade. Networks reaching Central and West Asia continued to foster economic prosperity and cultural exchanges.
Himalayan Regions and Interactions
The Himalayan territories, encompassing modern-day Himachal Pradesh, Uttarakhand, Nepal, Bhutan, Ladakh, and the region of present-day Sikkim, experienced increased interactions with the lowland kingdoms. While some peripheral areas of present-day Tibet had cultural exchanges with these Himalayan regions, the Tibetan plateau itself is part of the Upper East Asia subregion. Himalayan passes served as crucial conduits for trade, cultural exchanges, and the dissemination of religious beliefs.
Eastern and Northeastern Cultural Identities
In the northeastern territories, comprising present-day Assam, Arunachal Pradesh, Nagaland, Manipur, Meghalaya, Tripura, Mizoram, and adjacent parts of Bangladesh and northwestern Myanmar, regional cultures flourished. These societies maintained distinct pottery traditions, ritual practices, and economic connections with the wider Gangetic plains.
Religious and Artistic Maturation
Religious thought continued to evolve during this period, laying the foundations for future Hindu and Buddhist traditions. Artistic representations became increasingly sophisticated, reflecting religious iconography and elaborate rituals integral to the evolving spiritual landscape.
Legacy of the Age
The period between 765 and 622 BCE significantly shaped Upper South Asia's historical trajectory, strengthening regional kingdoms, enriching socio-religious practices, and enhancing economic prosperity. The cultural, religious, and political dynamics established during this time continued to resonate profoundly, influencing subsequent historical developments across the subcontinent.
The Assyrians’ perception of the total eclipse of the sun on June 15, 763, as an evil omen serves to drive the already plague-ridden country, threatened with expansion by Urartu, deeper into chaos.
A revolt breaks out in 763 and lasts until another plague hits the land four years later.
Upper South Asia (621–478 BCE): Empires, Faiths, and Cultural Transformations
Rise of the Magadhan Empire
From 621 to 478 BCE, the region of Upper South Asia witnessed the rise of the powerful Magadhan Empire in the Gangetic plain, particularly in present-day Bihar. The Magadhan state, with its capitals initially at Rajgir and later at Pataliputra (modern-day Patna), gradually dominated surrounding territories through both diplomacy and military conquest. It eventually outpaced its neighbors, including the older kingdoms of Kuru and Panchala in Haryana and western Uttar Pradesh.
Emergence of Influential States
Concurrently, the age saw the prominence of influential states such as Avanti in western Madhya Pradesh, Kosala in eastern Uttar Pradesh, and Gandhara in the region corresponding to modern-day northern Pakistan and eastern Afghanistan. These states engaged in frequent conflicts and shifting alliances, shaping the region’s geopolitical landscape.
Persian Influence and the Achaemenid Empire
In this period, territories such as Gandhara, Balochistan, and significant parts of present-day Afghanistan were incorporated into the Achaemenid Persian Empire under rulers such as Cyrus the Great and Darius I. Persian rule brought significant administrative reforms, improved trade networks, standardized coinage, and introduced Zoroastrian religious ideas, leaving enduring influences in these western regions.
Religious Innovations: Buddhism, Jainism, and Zoroastrianism
This era was remarkable for the birth and rapid spread of major religious movements, notably Buddhism and Jainism. Siddhartha Gautama (the Buddha) and Mahavira (the founder of Jainism) actively preached across Northern South Asia, gaining substantial followings. Buddhism particularly found significant early patronage in Magadha.
Zoroastrianism, emerging from Persia, also impacted areas under Persian influence, particularly Gandhara and Balochistan, introducing new religious concepts and rituals that intermingled with local traditions.
Socio-Cultural and Caste Consolidation
The caste system became further entrenched, shaped increasingly by the Brahminical norms codified in the later Vedic texts. The division between the four major varnas—Brahmins, Kshatriyas, Vaishyas, and Shudras—solidified further, influencing all aspects of social and religious life.
Archaeological Developments and Urbanism
Material culture saw the flourishing of the Northern Black Polished Ware (NBPW), widely associated with urban centers and elite culture, indicative of growing economic prosperity. The influential city of Taxila in present-day Punjab, Pakistan, emerged as a prominent educational and trade hub, reflecting a vibrant cultural and economic exchange extending to Central and West Asia.
Himalayan and Northeastern Interactions
The Himalayan territories—including modern-day Himachal Pradesh, Uttarakhand, Nepal, Bhutan, Ladakh, and present-day Sikkim—continued robust interactions with lowland kingdoms, facilitating the movement of goods, religious ideas, and cultural practices. Simultaneously, the northeastern regions of Assam, Arunachal Pradesh, Nagaland, Manipur, Meghalaya, Tripura, Mizoram, and adjacent areas of Bangladesh and northwestern Myanmar developed distinctive regional identities and engaged in cultural exchanges with the Gangetic heartlands.
Cultural and Artistic Flourishing
The period witnessed remarkable artistic and architectural advancements. Influenced by religious developments, early Buddhist stupas and Jain temples began to dot the landscape, accompanied by sophisticated sculptures and artworks embodying religious and cultural ideals.
Peoples and Ethnic Dynamics
Ethnic groups such as the Pashtuns and Tajiks emerged distinctly in historical records during this period, especially within territories influenced by Persian culture and administration, adding further complexity and diversity to the region's demographic composition.
Legacy of the Age
The era from 621 to 478 BCE proved transformative for Upper South Asia, setting foundations for future imperial, religious, and cultural trajectories. The political dominance of Magadha, the advent of Buddhism and Jainism, and Persian administrative influences indelibly shaped the historical, social, and religious landscapes of the region.
Upper South Asia (477–334 BCE): Consolidation and Cross-Cultural Exchange
Expansion and Dominance of Magadha
Between 477 and 334 BCE, the Magadhan Empire further expanded its dominance under dynamic rulers such as Bimbisara and his son, Ajatashatru. Magadha, centered at Pataliputra (modern-day Patna, Bihar), solidified control over vast territories by successfully annexing neighboring states including the powerful kingdoms of Kosala and Anga. Under the Shaishunaga dynasty established by Shishunaga, Magadha also absorbed the influential kingdom of Avanti, enhancing its geopolitical significance. Its military prowess, economic strength, and strategic geographical position contributed to its ascendance as the region's dominant power.
Persian Influence and Achaemenid Integration
The western territories of Gandhara, Balochistan, and present-day regions of Afghanistan continued under Achaemenid Persian influence, fostering significant administrative and economic integration. The Persian satrapy system, coinage, road networks such as the famous Royal Road, and cultural influences—including Zoroastrianism—permeated these territories, promoting stability and interconnectedness between Northern South Asia and the broader Persian Empire. Concurrently, the local Gandhara Kingdom retained regional prominence, known for its unique synthesis of Indo-Aryan and Persian cultures.
Emergence and Spread of Buddhism, Jainism, and Zoroastrianism
Buddhism and Jainism significantly expanded their followings during this period. With active royal patronage in Magadha, Buddhism notably flourished. Monastic communities and stupas proliferated, spreading throughout Northern South Asia. Jainism, under continued advocacy by disciples following Mahavira, established influential centers, further shaping regional religious and philosophical traditions. Concurrently, Zoroastrianism gained prominence in western territories under Persian rule, introducing additional religious perspectives into the region's cultural milieu.
Cultural Integration and Urbanization
The period witnessed increased urbanization characterized by prosperous trade hubs and centers of learning, such as Taxila in present-day Punjab, Pakistan. Northern Black Polished Ware (NBPW) pottery became more prevalent, symbolizing elite urban culture and reflecting extensive economic exchange. Urban centers became nodes of cultural synthesis, blending local traditions with Persian and emerging pan-Indian influences.
Societal Structures and Caste Solidification
Social structures, heavily influenced by Brahminical norms, grew more rigid. The caste system became deeply institutionalized, further defining societal roles and religious practices. Texts composed during this period reinforced distinctions between the four principal varnas—Brahmins, Kshatriyas, Vaishyas, and Shudras.
Himalayan and Northeastern Regional Developments
Interactions continued robustly between the Himalayan territories—including modern Himachal Pradesh, Uttarakhand, Nepal, Bhutan, Ladakh, and present-day Sikkim—and the Gangetic heartlands. Concurrently, northeastern regions including Assam, Arunachal Pradesh, Nagaland, Manipur, Meghalaya, Tripura, Mizoram, and adjacent territories of Bangladesh and northwestern Myanmar continued evolving unique cultural identities, engaging in trade and cultural exchanges with the central regions.
Small kingdoms and tribal confederations in the Tarai region (southern Nepal), notably the Shakya clan of Kapilvastu, flourished economically and culturally, benefiting from interactions with larger kingdoms. The steady eastward migration of Khasa peoples (Indo-Aryan speakers) reshaped demographics in western Nepal and its eastern reaches. Indigenous Kirāta peoples, speaking Tibeto-Burman languages, maintained autonomy and distinct identities in Himalayan foothills, largely untouched by dominant Indo-Aryan cultural currents.
Artistic and Architectural Advancements
Artistic traditions thrived, characterized by remarkable sculptures, intricate pottery, and architectural innovations linked to religious monuments such as stupas and early temples. These structures symbolized the increasing religious and cultural complexities within Northern South Asia.
Emergence of Ethnic and Cultural Identities
Distinct ethnic identities, including those of the Pashtuns and Tajiks, became increasingly visible, particularly in western and northwestern territories under Persian administrative structures. These groups contributed significantly to the demographic and cultural diversity of the region, influencing trade, warfare, and cultural exchanges.
Legacy of the Age
The era from 477 to 334 BCE represented a critical period of consolidation, cultural synthesis, and cross-cultural exchange in Upper South Asia. The expanded Magadhan dominance under the Shaishunaga dynasty, Persian influences in the west, and the widespread adoption of Buddhism, Jainism, and Zoroastrianism shaped enduring historical trajectories, laying foundational stones for subsequent empires and cultural traditions.
The severe overcrowding of Athens in the second summer of the Peoponnesian war has an unforeseeable consequence in a plague that, although it cannot be securely identified with any known disease, carries off a quarter of the Athenian population, including one-third of the fourteen thousand hoplites and cavalry.
In the face of a combined campaign on land from Sparta and its allies beginning in 431 BCE, the Athenians, under the direction of Pericles, have pursued a policy of retreat within the city walls of Athens, relying on Athenian maritime supremacy for supply while the superior Athenian navy harasses Spartan troop movements.
Unfortunately, the strategy also results in massive migration from the Attic countryside into an already highly-populated city, generating overpopulation and resource shortage
Due to the close quarters and poor hygiene exhibited at this time, Athens has become a breeding ground for disease and many citizens die, including Pericles, his wife, and his sons Paralus and Xanthippus.
In the history of epidemics, the 'Plague' of Athens is remarkable for the one-sidedness of the affliction as well as for its influence on the ultimate outcome of the war.
The disease will traditionally be considered an outbreak of the bubonic plague in its many forms, but reconsideration of the reported symptoms and epidemiology will lead scholars to advance alternative explanations.
These include typhus, smallpox, measles, and toxic shock syndrome.
Based upon striking descriptive similarities with recent outbreaks in Africa, as well as the fact that the Athenian plague itself apparently came from Africa (as Thucydides recorded), Ebola or a related viral hemorrhagic fever will be considered.
Given the possibility that profiles of a known disease may have morphed over time or the plague was caused by a disease that no longer exists, the exact nature of the Athenian plague may never be known.
In addition, crowding caused by the influx of refugees into the city had led to inadequate food and water supplies and a probable proportionate increase in insects, lice, rats, and waste.
These conditions would have encouraged more than one epidemic disease during the outbreak.
However, advancing scientific technologies may reveal new clues.
The so-called Plague of Athens, which returns twice more, in 429 BCE and in the winter of 427/426 BCE, also strikes much of the eastern Mediterranean.
In January 2006, researchers from the University of Athens will analyze teeth recovered from a mass grave underneath the city, and confirm the presence of bacteria responsible for typhoid.
“History is important. If you don't know history it is as if you were born yesterday. And if you were born yesterday, anybody up there in a position of power can tell you anything, and you have no way of checking up on it.”
—Howard Zinn, You Can't Be Neutral ... (2004)
