The Board of Health is likely to toughen regulations on cigars and e-cigarettes when it votes at its Feb. 24 meeting. According to Jennifer Sullivan, director of public health, the sale and use of e-cigarettes will probably become subject to the same regulations currently governing cigarettes. Sales of individual cigars will probably be prohibited, with regulations mandating they be sold in packs of at least four. Hookah establishments also wouldn’t be allowed in town. The board received a letter from the National Association of Development Organizations opposing the tighter restrictions on cigar and e-cigarette sales. “But I think the board is headed in a direction to pass’’ the new regulations, Sullivan said in an interview. She added that discussions are continuing on whether to change the age limits for cigarette sales.