{'fraction_non_alphanumeric': 0.010044642857142858, 'fraction_numerical': 0.0011160714285714285, 'mean_word_length': 5.453237410071942, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Summary: Health and Economic Burden of Pertussis

Bordetella pertussis infection is endemic and continues to present a significant public health challenge in all age groups, particularly in young infants, even in countries with high vaccination coverage. It is therefore important to explore methods of preventing B. pertussis infection and disease in all age groups and transmission of infection to vulnerable young infants. Reliable and consistent data on the economic burden of pertussis are required to evaluate the potential cost effectiveness of wider immunization strategies. Currently the reliability of burden data is confounded by the difficulties in identifying the disease and the limitation of available data to developed countries only. The 3 articles in this section of the publication have reviewed our current understanding of the health and economic burden of pertussis disease.