The research aims to reveal the effect of the local environments (the alluvial plain and the western plateau) on seasonal diseases and the variation in the response of these diseases to one environment rather than another. It also aims to provide a geographical point of view regarding the characteristics of the local environment and its impact on the seasonal distribution of the most common diseases in Najaf Governorate.

The research dealt with the study of the quarterly distribution of the most common diseases in the Najaf Governorate for the year 2023, and it included three sections. The first focused on studying the theoretical framework of the research. In contrast, the second dealt with the general trend of infection with the most common diseases in the Holy Najaf Governorate, and the research ended with a study of the natural factors affecting the quarterly distribution of the most common diseases. Spread in Najaf Governorate.

The research concluded that summer diseases are more responsive to the environment of the alluvial plain than in the Western Plateau, and we find this evident in the recurrence of disease peaks in the Manathira and Mishkhab districts.

The local environments, with their natural and human characteristics, played a significant role in the spread and decline of diseases. This was evident in their diversity and the number of infections recorded in a place, as well as their variation from one season to another. To study the local environment in the study area, the researcher conducted a comprehensive field survey. This survey included administrative units from district centers and districts, represented by health centers and hospitals. The researcher also relied on medical records, counting as many as possible, to ensure the accuracy and reliability of the data used in the study.

Medical records, health centers and hospitals, spread and decline of diseases

- Al-Aktha’, Abdul Rahman, Public Health and Health Care, University of Aleppo, 1972.

- Al-Khafaf, Abd Ali and Shaaban Kazem Khudair, Climate, and Man, first edition, Jordan, 1999.

- Al-Rashidi, Radi Kazem, Soil Microbiology, University of Basra, 1987.

- Al-Zamili, Ayed Jassim, Spatial Analysis of Surface Forms in Najaf Governorate, unpublished master’s thesis, College of Arts, University of Kufa, 2001.

- Sami, Ismat Abdel Qader, Internal Diseases, Part One, 1980.

- Al-Sayegh, Rafid Abdul Nabi, Climatic characteristics and their relationship to palm diseases in Najaf Governorate, unpublished master’s thesis, College of Arts, University of Kufa, 2007.

- Al-Ani, Hazem Tawfiq and others, Local Climate, University of Baghdad, 1982.

- Al-Qassab, Nafi Nasser, The geographical theater of the Western Plateau region in Iraq and its development qualifications, Iraqi Geographical Journal, issue eighteen, University of Baghdad, 1986.

- Al-Muzaffar, Mohsen Abdel-Sahib, Medical Geography: Content, Method, and Spatial Analysis.

- Al-Muzaffar, Safaa Majeed, Spatial Analysis of Soil Pollution in Najaf Governorate, unpublished master’s thesis, College of Arts, University of Kufa, 2007.

- Khalifa, Ahmed Khalifa, Foundations of Immunology, University of Baghdad, 1990.

- Al-Ani, Falah Khalil and Sabah Naji Al-Abbasi, Infectious diseases in cows and buffaloes, 1989.

- Muhaisen, Farhan Majmad, Diseases and Parasites of Fish, 1983.

- Khalaf, Jassim Khalaf, Geography of Iraq, 1965.