A positive antigen test result is considered accurate if the instructions are followed carefully. However, there is a greater likelihood of false negative results, which means that it is possible to become infected with the virus but achieve a negative result. Depending on the situation, the doctor can recommend a PCR test to confirm a negative antigen test result. This COVID 19 test detects certain proteins in the virus. With a long nose swab to get a fluid sample, some antigen tests can produce results in minutes.
We have created a time series of the cumulative number of PCR and antigen tests that have been carried out so far, based on weekly press releases from “laboratory tests” by the Ministry of Health, Consumption and Social Welfare. We do not take into account the daily test numbers published in the daily “updates” because the reporting is constantly delayed. In addition, weekly reports appear to be delayed, so the numbers for a particular week increase the following week. The numbers are checked once a week with the latest figures, as additional laboratories report their results. The data are from the 13th. April 2020 available in a press release from the Ministry of Health, Consumption and Social Welfare.
The daily change in the total number of people analyzed corresponds to the number of people with samples that have been analyzed since the last daily report. This suggests that the total number of people repeatedly counted who were assessed more than once during the pandemic. However, no further details could be found in the sources.
We combine these two numbers to determine the total number of samples analyzed, because our source for the number of confirmed cases contains positive PCR and antigen test results. October 2020, the Robert Koch Institute published an update of the National Test Strategy. This update shows on page 4 that antigen tests can be a useful addition to the PCR test under certain conditions. Antigen tests thus contribute to the further expansion of the test capacity. A daily status report from 2nd. “Therefore, the positive rates from the previous weeks are not directly comparable to the positive rates for week 46.”.
The Croatian government provides daily information about confirmed cases, deaths and evidence. We have created a time series based on the cumulative numbers given in the web archives of the latest press release from koronavirus.hr. It is unclear whether the reported figures contain evidence that the results are still pending. The Nepalese lateral flow test Ministry of Health and Population publishes COVID-19 reports on a daily basis, which we use to create a time series of the daily and cumulative number of PCR tests carried out to date. Since our data source is an unofficial repository for official data, we regularly check the accuracy of this repository using direct official channels.
Test numbers for up to 54 laboratories in the country are given in the data set. The dates are from the week of the 15th. We create a daily time series of the cumulative number of samples that have been analyzed so far using the daily situation reports published by the Malawi Institute of Public Health. The time series begins on 29.
The English version of the same page reports the same number as “total evidence”, which is also unclear. A more detailed control panel in the same web domain provides test numbers for downloadable CSV files from 1. June 2020, with each CSV file containing separate columns for the cumulative number of PCR tests and non-PCR tests.
Sciensano offers a daily time series of the number of tests carried out per day, which is updated as new data become available every day. The government of Bangladesh previously had data on the total number of samples analyzed (“TOP, otro, Grant ,, ??, ot ot ot , ?? ??, ot “) submitted to an official body. The full-time analyzed sample series could be obtained from the detailed panel from the 4th.
This discrepancy of 981 tests is small and accounts for less than 1% of the cumulative samples analyzed at that time. In contrast, the cumulative number of samples that are analyzed through routine monitoring and contact tracking corresponds exactly to the cumulative number of people who are analyzed daily in these respective categories. It is important to note that the source indicates that “one case is considered the first positive test or the first negative test per person, ie. Repeated tests are not taken into account. April 2020, the Ministry of Health and Public Hygiene published the total number of samples taken in a daily publication on its official Facebook page. For a small number of daily updates, only the daily change is specified.
The Jamaican Ministry of Health and Social Affairs publishes daily press releases on its official website, which indicate the daily and cumulative number of samples analyzed with which we create a daily time series. Press releases break down test numbers into positive, negative, and outstanding tests so we can exclude outstanding evidence. It is unclear when the tests started. Available in March 2020 when it was reported that 148 samples were tested.