Вот из англоязычных источников, если это больше доверия внушает. Тут пишут даже про 36 часов и указывают, что если нет возможности принять доксициклин, то профилактика вообще НЕ рекомендована (причины указаны).http://www.uptodate.com/contents/what-to-do-after-a-tick-bite-to-prevent-lyme-disease-beyond-the-basics?source=see_linkNeed for treatment — The clinician will review the description of the tick, along with any physical symptoms, to decide upon a course of action. The Infectious Diseases Society of America (IDSA) recommends preventive treatment with antibiotics only in people who meet ALL of the following criteria:●Attached tick identified as an adult or nymphal Ixodes scapularis (deer) tick●Tick is estimated to have been attached for ≥36 hours (based upon how engorged the tick appears or the amount of time since outdoor exposure)●The antibiotic can be given within 72 hours of tick removal●The local rate of tick infection with B. burgdorferi is ≥20 percent (known to occur in parts of New England, parts of the mid-Atlantic states, and parts of Minnesota and Wisconsin)●The person can take doxycycline (eg, the person is not pregnant or breastfeeding or a child <8 years of age)If the person meets ALL of the above criteria, the recommended dose of doxycycline is a single dose of 200 mg for adults and 4 mg/kg, up to a maximum dose of 200 mg, in children ≥ 8 years.If the person cannot take doxycycline, the IDSA does not recommend preventive treatment with an alternate antibiotic for several reasons: there are no data to support a short course of another antibiotic, a longer course of antibiotics may have side effects, antibiotic treatment is highly effective if Lyme disease were to develop, and the risk of developing a serious complication of Lyme disease after a recognized bite is extremely low.