Covid: Rt contagion index above 1, all calculations in agreement – Physics & Mathematics

Covid: Rt contagion index above 1, all calculations in agreement – Physics & Mathematics
Covid: Rt contagion index above 1, all calculations in agreement – Physics & Mathematics

The Rt index has exceeded 1, which indicates the number of people who can be infected by a person carrying the SarsCoV2 virus infection: this is indicated by all the sites that calculate the Rt index on the basis of different criteria than those adopted by the Istituto Superiore di Sanita (Iss) and which allow for more up-to-date values.

The site of physicist Roberto Battiston, of the University of Trento and coordinator of the Observatory of epidemiological data in collaboration with the National Agency for Regional Health Services (Agenas), indicates Rt at 1.0 and “rapidly growing”. Battiston himself specifies, however, that the calculation refers to last July 11 and that it is appropriate to consider values ​​closer in time.

For example, this is the case of Covidstat, of the National Institute of Nuclear Physics (Infn), which on the basis of data updated to 15 July calculates the Rt index at 1.28, with a margin of uncertainty between 1.50 and 1.09 and 95% reliability.

Covindex is in line with this value, which on the data of 15 July indicates the value of 1.45 for Rt, calculated on the basis of the ratio between the number of new positive cases and the swabs performed.

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Covid contagion index calculations agreement Physics Mathematics

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