There are no established risk factors for Loffler syndrome. Nevertheless, it has been shown that Indians, children, people live in tropical areas are at increased risk for developing the loffler syndrome. Common risk factors in the development of helminthic disorders such as ascariasis are often associated with poor sanitary conditions and environmental fecal contamination. Poor socioeconomic conditions, use of human feces as fertilizer, lack of hand washing, eating unwashed fruits and vegetables, environmental contamination with feces are among known conditions which were correlated to ascariasis. Common risk factors in the development of strongyloidiasis include: Occupations that increase contact with contaminated soil such as farming and coal mining, barefoot walking (cultural or low socioeconomic status), Human T-cell lymphotropic virus-1 (HTLV-1) infection, Immunosuppressive therapy with corticosteroids and other medications, Immune reconstitution syndrome, Hematologic malignancies (lymphoma), Tuberculosis, Malnutrition, Diabetes mellitus, chronic obstructive pulmonary disease, (COPD), chronic renal failure, Living in endemic regions, Alcoholics, Travelers, and immigrants.

There are no established risk factors for Loffler syndrome itself. Nevertheless, it has been shown that Indians, children, people live in tropical areas are at increased risk for developing loffler syndrome.Common risk factors in the development of helminthic disorders such as ascariasis are often associated with poor sanitary conditions and environmental fecal contamination.

The risk factors for ascariasis are often associated with poor sanitary conditions and environmental fecal contamination. Risk factors for ascariasis include:^[1][2][3]

• Poor socioeconomic conditions
• Use of human feces as fertilizer
• Lack of hand washing
• Eating unwashed fruits and vegetables
• Environmental contamination with feces

Common risk factors in the development of strongyloidiasis include:^[4][5]

• Occupations that increase contact with contaminated soil such as farming and coal mining
• Human T-cell lymphotropic virus-1 (HTLV-1) infection
• Immunosuppressive therapy with corticosteroids and other medications,
• Immune reconstitution syndrome
• Hematologic malignancies (lymphoma)
• Tuberculosis
• Malnutrition
• Diabetes mellitus, chronic obstructive pulmonary disease (COPD), chronic renal failure.
• Living in endemic regions.
• Alcoholics
• Travelers, immigrants