Press notes

Rome, 14 January 2022 In Italy on 03 January Omicron was the predominant variant of the virus, with an estimated prevalence of 81% and a regional variability between 33% and 100%. The Delta variant, instead, accounted for 19% of the examined samples. These are the final results of the flash survey carried out by the Istituto Superiore di Sanità (Italian National Institute of Health) and the Ministry of Health together with the regional laboratories and the Bruno Kessler Foundation. For the investigation, the laboratories of the Regions and Autonomous Provinces were asked to select subsampl...

Rome, 14 January 2022 Here are the main data that emerged from the Situation Room: The weekly incidence at national level has steadied: 1988 per 100,000 inhabitants (07/01/2022 -13/01/2021) versus 1699 per 100,000 inhabitants (31/12/2021 -06/01/2021), data from the Ministry of Health. In the 22 December 2021 – 4 January 2022 period, the average Rt calculated on symptomatic cases was equal to 1.56 (range 1.24 - 1.8), an increase compared to the previous week and well above the epidemic threshold. Instead, there was a slight decrease in the transmissibility index based on hospitali...

  The importance of monitoring cases through surveillance should not be confused with the criteria used to decide guidance on cases and contacts. These FAQs summarize the main answers relative to case definitions for the purposes of epidemiological surveillance and to the modalities used to define self-surveillance, quarantine and isolation measures. 1) Why should the definition of surveillance case include all positive cases and not just the cases with symptoms that are indicative of COVID-19 (respiratory symptoms, high fever, altered taste and smell, etc.)? The symptomatology of the SARS-...

Ecco come vengono ottenute le incidenze riportate settimanalmente dall’Iss 11 gennaio 2021 - Qual è l’incidenza settimanale di diagnosi, ricoveri e decessi per Covid? Ogni settimana l’Iss pubblica le incidenze aggiornate, suddivise per età e status vaccinale, nel cosiddetto ‘report epidemiologico esteso’. All’interno sono presenti due tabelle, una con i ‘numeri grezzi’ relativi all’epidemia e una con i tassi di incidenza standardizzati per età e l’efficacia vaccinale aggiustata per età. Come si calcola l’incidenza? Per il calcolo delle incidenze non è possibile utilizzare le numerosi...

I campioni prelevati dalle acque reflue indicano un forte incremento della circolazione della variante Omicron di SARS-CoV-2 in Italia nelle tre settimane comprese tra il 5 e il 25 dicembre. Lo affermano i risultati della flash survey straordinaria su Omicron, che ha analizzato 282 campioni di acque reflue raccolti in 98 punti di campionamento di 16 Regioni/Province Autonome. In totale, 80 campioni (28.4%) sono stati identificati come positivi per la variante Omicron mediante un test molecolare rapido messo a punto dall’Istituto Superiore di Sanità. Nell’arco delle 3 settimane, in concordanza ...