Why do we

Why do we say that 25000 people are living with hiv without knowing it ?

In a press release of 28 November, public Health France recalled that approximately 25,000 people are still unaware that they are infected with the aids virus in France

A figure from a study conducted by researchers from the Inserm in collaboration with public Health France.LE FIGARO.

– This figure takes you by surprise. What do we know of these people? Virginie SUPERVIE. – We know, obviously not their identity, but we are trying, through epidemiological data, to learn a little more about them. For example, we know that it is primarily gay men (40 %) and heterosexual foreign-born (40 %). . Approximately 10.

.300 resident in the Île-de-France and over 3,000 in the regions of Auvergne, Rhône-Alpes and Provence-Alpes-Côte d’azur. We also know that the overseas departments are very much affected, in particular Guyana. How did you get these data? Several methods can be used.

In the past, estimates have been obtained from surveys carried out on samples of the population. We asked a group of people to achieve a HIV, and from the number of séropositivités discoveries, we extrapolait these results to the entire population. Now, we use another method, which allows us to obtain more regular estimates most thin at less cost. What is this method? Before explain it, it must be understood that there is a delay between infection by the virus and the diagnosis of the infection, which can be very long, more than ten years for some people. This means that, when 6000 people discover their hiv status in 2016, there are others who have been infected this year, but who do not yet know. Similarly to the previous years.

Let’s go back to the method in question.

It is known that in 2016, 6000 people have discovered their hiv-positive status.

We also know about the number of séropositivités discoveries in previous years. For each person, we collect clinical and biological data which give us information on the delay between infection by the virus and the diagnosis. With this information, we can go back in time and estimate how many there must have been infections in total each year, whether they were screened or not, to see the number of discoveries of seropositivity. How did this figure in recent years? The first estimates are from 2010, and are stable.

Even if there is a progression of screening, there are still no signs of its impact.

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