Attending daycare is associated with a 5-fold increase in the risk of Hib. Previous hospitalizations – with 90% increase in the risk. Breastfeeding for over 6 months decreases the risk by 53%.Day care attendance and other risks factors for invasive Haemophilus influenzae type b disease. 1993, Arnold, Am J Epidemiol
Passive smoking is associated with a 40% increase in the risk of Hib. Daycare – with 3-fold increase in the risk. Breastfeeding decreases the risk by 50%. African Americans got infected 4 times more often.A case-control assessment of risk factors for Haemophilus influenzae type b meningitis. 1993, Sherry, Eur J Pub Health
Breastfeeding for more than a month is associated with a 62% decrease in the risk of Hib meningitis. Breastfeeding for more than 9 months – with 88% decrease in the risk. Daycare – with 2.6-4.7 times increase in the risk.Risk factors for primary invasive Haemophilus influenzae disease: increased risk from day care attendance and school-aged household members. 1985, Istre, J Pediatr
Among children under the age of 6 months, exclusive breastfeeding is associated with a 90% decrease in the risk of Hib. Attending daycare is associated with a 2-6 fold increase in the risk. The larger are the groups at daycare, the higher is the risk.Risk factors for primary invasive pneumococcal disease among children in Finland. 1995, Takala, JAMA
Kindergarten is associated with an increase in the risk of pneumococcal infection among children under 2 years of age by 36 times, and the risk of frequent otitis media - with 9-fold increase.