In Venezuela to date Mosquito Alert has received a total of 150 reports from 109 participants. Of these, 71 (47%) are reports of adult mosquitoes, 8 (5%) are reports of mosquito breeding sites, and 71 (47%) are reports of mosquito bites.

Reports

By administrative subdivision

The following plot shows the number of reports received to date by report type and administrative subdivision.

Over time

The first plot shows the cumulative number of reports received countrywide. The remaining plots show, for the 10 administrative units (at each available level) from which the most reports have been sent, the cumulative reports over time (line plots) followed by the daily reports stacked over time (area plots).

Sampling Effort

Mosquito Alert estimates sampling effort as the expected number of participants who send at least one report from a given 0.025° longitude/latitude grid cell on a given day (the expected-value measure, SE_expected, rather than the simple probability of at least one report). Summed across grid cells and days, it can be read as the expected number of participants sending at least one report from an area over the period. Each grid cell is assigned to an administrative unit using the location of its centre.

Worldwide, the cumulative sampling effort to date is 55,622 (the expected number of participants sending at least one report, summed across all grid cells and days), drawn from 164,071 grid cells and 1,935,790 participant-days recorded between 2014-06-14 and 2026-09-03.

In Venezuela, the cumulative sampling effort is 142 — about 0.26% of the worldwide total (ranking 38 of 213 countries), across 620 grid cells.

By administrative subdivision

The following plot shows the total sampling effort to date by administrative unit.

Over time

The first plot shows this country’s cumulative sampling effort over time. The remaining plots show the cumulative sampling effort over time for the 10 administrative units (at each available level) with the most sampling effort.

Participants tracked per week

Sampling effort weights each participant by how likely they are to send a report. A simpler complementary measure is the number of unique participants whose background tracks place them in an area in a given week. These figures count participants rather than tracks, so a participant whose phone records background locations in many grid cells over a week counts once in each administrative unit they visited, however many locations they sent. For the same reason the counts are not additive across units: someone who travels between two provinces in a week is counted in both. The counts begin in 2018, when the 0.025° sampling cells were introduced, and the current (incomplete) week is omitted. Background tracking was available only in the Android app until 2020, when it was added to the iOS app as well, so the earlier weeks count Android participants only. The units here are GADM administrative levels 1 and 2.

In the most recent complete week (beginning 2026-08-17), background tracks were received from 1 participant in Venezuela. The highest weekly figure to date is 14, in the week beginning 2024-07-08. Participants have been tracked in 24 administrative level 1 units and 170 administrative level 2 units.

The next plot accumulates those weekly counts into the total number of different people whose background tracks have ever placed them in Venezuela. Each participant is counted once, in the week they were first tracked here, so the line rises only when somebody new appears and is flat while only familiar participants are being tracked. It is not the running sum of the weekly counts above, which would count the same person again every week.

The following plots show the weekly counts for the 10 administrative units (at each available level) in which the most participants have been tracked.

Operating Systems

Of the total of 150 reports that Mosquito Alert has received to date from Venezuela, 147 (98%) were sent from Android devices and 3 (2%) were sent from iOS devices. The following plot shows the time series of total cumulative reports sent from iOS and Android devices from the start of the project in 2014 to date.