“…Current vaccines (>2.5 IU/intramuscular dose), when administered intradermally, are equally or more efficient than when administered intramuscularly [18] . While the intradermal regimen is especially cost-effective in clinics that see several patients a day [19] , it is still worth-using - and cost-effective - even in settings where only one or two patients are typically treated per day. Healthcare providers also need to be adequately trained in intradermal administration, as unintended intramuscular or subcutaneous administration (under the skin vs. in the skin) can lead to a lack of efficacy and vaccination failure.…”