Recently, Dr. Crespo et al. published in your Journal a paper recommending the use of ultrasonography during the current phase of the COVID-19 pandemic whilst wearing only a facial mask for protection, which we deem inadequate. Prevention is key when performing an ultrasound test, since this virus is highly contagious. During the pandemic, every patient should be considered as potentially infected and the procedure requires a close proximity. Therefore, extreme hygiene and a sonographer equipped with the appropriate personal protection (mask, cap, gown, gloves, shoe covers and goggles, with a facial screen and high-efficacy mask for confirmed or highly suspect cases) are of the utmost importance to prevent viral transmission.