508Open Journal of Pediatrics all three girls. Prophylaxis in two patients based on Penicillin V was instituted. Conclusion: Although less frequent, post-streptococcal chorea is still seen in our country and is still an important health problem that needs more real medical efforts.

Introduction: Psychomotor development (PMD) reflects the cerebral maturation through sensory, motor and psychological acquisitions of an individual. Its evaluation allows an early diagnosis of delays in order to take care of them. The objective of this study was to determine the profile and explanatory factors of PMD of infants in N'Djamena. Methods: This was a cross-sectional study conducted at the “Notre Dame des Apôtres” Hospital in N'Djamena. It involved 428 infants aged 1 to 24 months received in preventive consultation between October 2017 and June 2018. The Denver II scale was used for the assessment of PMD. Data were analyzed with SPSS 21.0 software. Results: the sex ratio was 1.06. The most represented age group was under 3 months (35.5%). The items of gross motor skills were 95% completed, fine motor skills 93.8%, language 84.6% and sociability 68.8% at the 90th percentile. Development was advanced in 56.8% normal in 32.1% and delayed in 2.1%. Statistically significant differences in PMD were observed according to age group (p= 0.000), vaccination status (p= 0.002), feeding mode (p= 0.000), maternal exchange (p= 0.000) and pregnancy follow-up (p= 0.03). Conclusion: The psychomotor development of N'Djamenese infants is similar to that of other African children, although some variations are noted. It is influenced by certain factors related to the infant and the mother.

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