The accumulated incidence and positivity (percentage of positives for each test performed) are some of the factors that mark the evolution of the pandemic, but there is a third, traceability, which is the one that has become red in Lanzarote.
This parameter determines the percentage of cases that have been assigned to a specific outbreak after the corresponding monitoring. And on the island, the latest report from the Ministry of Health puts that traceability at only 43.48 percent, well below the Canary Islands average, which is 63.71%.
This has also meant that, only with respect to this indicator, Lanzarote has been placed at "high risk". In each parameter measured by the detailed report of the Ministry, five levels of risk are established (minimum, low, medium, high or very high) differentiated by colors. And in traceability, Lanzarote is in red. In the rest of the islands, none is below 60%. That is specifically the percentage that Tenerife has (60.76%), while Gran Canaria reaches 77.5% and La Palma 80%.
Regarding the cases detected in Lanzarote in the last seven days, 10 have occurred in Arrecife, four in Teguise, another four in Yaiza and two in the municipality of Tías. The Health report this Tuesday, Teguise is the one with the worst traceability record, with only 25% and a rating that rises in this municipality to "very high risk". In practice, it means that of the four cases detected, only one has been assigned to an outbreak, while in the other three its origin is not clear.
In Tías that traceability is at 50%, so one of the two cases has been assigned to an outbreak and the other has not; and in Arrecife at 60%, that is, six of the ten have an identified origin. For notification purposes, any grouping of 3 or more cases with active infection in which an epidemiological link has been established is considered an outbreak.
As for Haría, San Bartolomé and Tinajo, in the last week they have not registered new cases of Covid. Tinajo has accumulated two consecutive weeks without positives, while Haría and San Bartolomé had concentrated a good part of the cases diagnosed on the island in the previous week.
The incidence, well below the archipelago average
Despite that bad data in traceability, in the rest of the indicators Lanzarote does remain in a much more favorable situation than most of the islands. The accumulated incidence of new cases per 100,000 inhabitants in the last seven days was 15.1 this Monday (classified as "low risk"), compared to the archipelago's average of 71.65. In this parameter, in the latest Health report only La Palma is in a better situation than Lanzarote, with 6.05. For its part, in the "maximum risk" zone are both Tenerife (with 129.65 cases per 100,000 inhabitants in seven days) and La Gomera (with 162.77).
Positivity has also improved in Lanzarote, standing at 1.44% this Tuesday, compared to the average of 6.15% in the Canary Islands. In the case of the archipelago, it has been exceeding the 5% set as a risk threshold for the situation to get out of control for weeks, depending on the number of tests that must be carried out for each positive. The highest positivity occurs in Tenerife (9.79%), followed by La Gomera (5.23%); and the lowest in La Palma (0.78%).
