For the ease of performing the test and the rate in providing a response, Ab-RDT are best used in monitoring systems to guide public health actions and to quantify seroprevalence at a human population level [8]. Healthcare providers, being at the frontline of response to COVID-19, are Rabbit Polyclonal to KANK2 considered a human population at high risk of acquiring the disease. Despite the close physical contact with the patient, dentists have been able to scrupulously manage and efficiently use protecting products. Keywords: Sars-Cov-2, coronavirus, COVID-19, dentists, antibody, Italy 1. Introduction In December 2019, a new coronavirus named SARS-CoV-2 was reported to the WHO Country Office in China. Although SARS-CoV-2 is definitely asymptomatic for the majority of infected people, this coronavirus can cause a respiratory disease, named COVID-19, progressing in some cases to atypical bronchial pneumonia not responding to treatment. COVID-19 is Asenapine maleate definitely lethal for approximately 10% of symptomatic subjects, the death rate becoming higher in males, older subjects, Asenapine maleate and people with concomitant chronic conditions. From your Wuhan region of China, the virus spread globally. Italy was the 1st country where the outbreak spread outside Asia. SARS-CoV-2 was first recognized on 21 February 2021, but was present in the Lombardy region weeks before the 1st established case was confirmed [1]. In Lombardy, the richest Italian region with the highest number of international trades, the largest number of occupants (over 10 million), and the highest human population density, SARS-CoV-2 substantially spread, particularly in eastern provinces. Lombardy remains today among the most hit by COVID-19 areas worldwide. COVID-19 has killed almost 20,000 people in Lombardy and infected more than 400,000 [2], undoubtedly the highest rate in Italy [3,4]. To detect the disease SARS-CoV-2, laboratories globally use nucleic acid amplification checks (NAATs) mainly based on reverse transcription polymerase chain reaction (RT-PCR) assays [5,6]. Although these checks are highly accurate [7], limited access, capacity limitations, and connected costs led to the development of fast and cheap rapid diagnostic checks (RDTs) to diagnose SARS-CoV-2. RDTs can detect either antigens (Ag) or antibodies (Ab) and are able to provide a response in 15 to 40 min [8]. Ag-RDTs directly detect the presence of the disease indicating a present disease replication and therefore an active illness. Ab-RDTs detect immunoglobulins (Ig) IgM and IgG or a combination of them. Immunoglobulins are produced during an active illness but will also be detectable after the disease has been eradicated, indicating consequently a earlier illness [9]. IgM and IgG can be recognized actually after 48 days from disease onset symptoms [10,11,12]. In particular, the response of the immunosystem is definitely 1st associated with an increased level of IgM while followed by an increase of IgG [13]. For the ease of performing the test and the rate in providing a response, Ab-RDT are best used in monitoring systems to guide public health actions and to quantify seroprevalence at a human population level [8]. Healthcare Asenapine maleate providers, being at the frontline of response to COVID-19, are considered a human population at high risk of acquiring the disease. A systematic review aimed at quantifying the prevalence of SARS-CoV-2 illness among healthcare workers found 46 studies assessing illness through RT-PCR, showing a pooled prevalence estimate of 11% overall, 19% among symptomatic subjects, 8% among both symptomatic and asymptomatic, and 5% among asymptomatic workers [14]. The same review also recognized 28 studies evaluating prevalence of antibodies against SARS-CoV-2, showing a pooled illness prevalence of 7% [14]. The estimations Asenapine maleate considerably assorted relating to country and type Asenapine maleate of staff [14]. A study based on a sample of 3985 healthcare workers located in seven different private hospitals across Lombardy region found a higher IgG positive prevalence (i.e., 13%) [15], compared to the global pooled estimate [14]. Among healthcare providers, dentists, dental care hygienists, and support staff are considered a particularly high-risk category of getting infected as they perform their daily activity in close contact with individuals aerosol and droplets form oral cavities [16,17]. Despite the potentially high risk to get infected with SARS-CoV-2 among dentists, the prevalence of SARS-CoV-2 positive subjects among dentists recognized through RT-PCR diagnostics was 0.8% in China and 0.9% in the US [18,19]. Inside a descriptive quantitative study among dentists in Spain, prevalence of SARS-CoV-2 positive subjects was 1.9% in April 2020, 3.0% in June 2020, and 1.3% in September 2020 [20]. Preventive actions and protocols already.