{'fraction_non_alphanumeric': 0.015852047556142668, 'fraction_numerical': 0.010568031704095112, 'mean_word_length': 5.316666666666666, '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}}
Induced vivax malaria among users of intravenous heroin.

IN RECENT YEARS, malaria in California has been limited mainly to importation of disease by servicemen returning from overseas and foreign travelers. The parasites have been largely confined to such persons, spilling into the community only occasionally through blood transfusions. An isolated mosquito-borne outbreak in 1952-53 among 35 Campfire girls was traced to a serviceman who had acquired his infection in Korea. Within the past several months, however, a new pattern of malaria transmission has emerged in two southern California counties among parenteral narcotics users. The purpose of this brief report is to highlight the epidemiologic and public health implications of these outbreaks.