RESUMO
BACKGROUND: Both natural immunity and vaccine-induced immunity to COVID-19 may be useful to reduce the mortality/morbidity of this disease, but still a lot of controversy exists. AIMS: This narrative review analyzes the literature regarding these two immunitary processes and more specifically: (a) the duration of natural immunity; (b) cellular immunity; (c) cross-reactivity; (d) the duration of post-vaccination immune protection; (e) the probability of reinfection and its clinical manifestations in the recovered patients; (f) the comparisons between vaccinated and unvaccinated as to the possible reinfections; (g) the role of hybrid immunity; (h) the effectiveness of natural and vaccine-induced immunity against Omicron variant; (i) the comparative incidence of adverse effects after vaccination in recovered individuals vs. COVID-19-naïve subjects. MATERIAL AND METHODS: through multiple search engines we investigated COVID-19 literature related to the aims of the review, published since April 2020 through July 2022, including also the previous articles pertinent to the investigated topics. RESULTS: nearly 900 studies were collected, and 246 pertinent articles were included. It was highlighted that the vast majority of the individuals after suffering from COVID-19 develop a natural immunity both of cell-mediated and humoral type, which is effective over time and provides protection against both reinfection and serious illness. Vaccine-induced immunity was shown to decay faster than natural immunity. In general, the severity of the symptoms of reinfection is significantly lower than in the primary infection, with a lower degree of hospitalizations (0.06%) and an extremely low mortality. CONCLUSIONS: this extensive narrative review regarding a vast number of articles highlighted the valuable protection induced by the natural immunity after COVID-19, which seems comparable or superior to the one induced by anti-SARS-CoV-2 vaccination. Consequently, vaccination of the unvaccinated COVID-19-recovered subjects may not be indicated. Further research is needed in order to: (a) measure the durability of immunity over time; (b) evaluate both the impacts of Omicron BA.5 on vaccinated and healed subjects and the role of hybrid immunity.
RESUMO
Calcific tendinopathy of the rotator cuff is a chronic disease that mostly in the acute phase compromises the articular function. The aim of this study is to estimate the effectiveness of the ultrasonic-guided percutaneous treatment (UGPT) in association with the rehabilitative treatment. We evaluated 106 patients with calcific tendinopathy, treated by UGPT. They underwent clinical evaluation by a physiatrist at T0 (the same day of UGPT), and were reassessed at follow-up 1 month (T1) after treatment. The assessment at T0 and T1 was done by the Constant-Murley scale. Analyzing the results, we found that at T0, the average Constant score was 43.5 out of 100; at T1 it was 83.2 out of 100. The improvement was statistically significant (P < 0.0005). We found that UGPT and rehabilitation associated with the multidisciplinary management of the patient (orthopedic surgeon-radiologist-physiatrist) was able to prevent adhesive bursitis, and to achieve clinical cure in most of the treated cases.
