Supply vs Demand: Which countries are meeting their COVID-19 vaccine standards?


We soon that the US was close to the “COVID-19 vaccine” – that is, the place where the vaccine could begin to exceed demand. We also saw that the multiplicity of countries can hide large differences from government. That is why we sought to understand where nations are falling in this way; These differences are important in understanding how to manage global vaccination efforts.

To do this, we looked at the proportion of older people with at least one vaccine by the state, the daily rates of first-line treatment (using seven days), and how the rates changed in the last week (see method). We were interested in identifying countries that may have fewer vaccines (e.g., less than 50% of adults 18 years of age or older) as well as evidence of lower initial consumption, as these countries could pose significant challenges in achieving adequate vaccines in the US

As of April 29, between 50 countries and DC, we find:

The proportion of adults who were once vaccinated was 55% overall, and varied nationally from 41% (Alabama) to 74% (New Hampshire). In addition, there is evidence of a shortage of new transportation systems in many countries. The daily rate for the first supervisor at the national level is 451 per 100,000, from 136 per 100,000 (Mississippi) to 889 (Rhode Island). Most countries (31 out of 51) have lower vaccines than other countries, indicating that vaccination rates are significantly higher in major countries (e.g., California and Pennsylvania). In addition, the rate of first-time management at 100,000 per week has dropped to the US (-27%) and almost all countries (45 of 51) (see Group 1).

At the end of the vaccine, more than 60% of people have received at least one in 12 outlets. This is found mainly in the Northeast (8 out of 12). Seven have more than 65% vaccination and all but 2 (New Hampshire and New Mexico) are providing the best possible first-line treatment in the US. Eight of the 12 countries saw a reduction in the first test prices last week, indicating that these countries are approaching or reaching the required level, despite having a large number of vaccines and the number of supervisors.

At the end of the vaccine, less than 50% received at least one in 13 countries, including 6 under 45%. Nine of these countries are in the South and in total, the number of daily vaccines per day per 100,000 is less than that. In addition, many are experiencing a reduction in the initial dose given. This indicates that these countries may not be close to or arriving at the destination, they have done so with less vaccination.

The other remaining regions, located between the two landscapes, are mainly in the Midwest and, to a lesser extent, South and West. In about half of these countries, between 55% and 60% of adults have experienced it once. All but a few that have happened come down to the first operational level last week.

Countries that are showing the combination of low vaccines and low vaccines are causing serious concern. There are 13 countries with less than 50% of the population, all of whom are vaccinating older people in the country. Twelve countries also saw a decrease in the number of adult vaccines last week. This includes three countries (Alabama, Louisiana, and Mississippi) with the highest or less than 42% vaccine, the lowest in the country, with about half the US vaccine. These are countries that may be too far away to get adequate vaccines and may be at risk of future epidemics if the rates do not increase significantly.


As with the US, many countries appear to be in or near their COVID-19 vaccine depletion – as their availability increases demand. While this may not be a problem for countries that have already been vaccinated (> 60%) of adults with the same rate, about one-fourth of less than 50%, which is below, may be necessary to reduce the risk of developing epidemics. In addition, in these countries, the number of vaccines is below the national average. The perceptions of many countries also seeing a decrease in the first-rate control rate suggest that they may be more important in promoting vaccine use.

Most of the vaccines were obtained from Johns Hopkins University Center for Civic Impact, which collects government vaccines from the Centers for Disease Control and Prevention (CDC) and COVID-19 dashboards. Most adults (18 years or older) were obtained from Population in 2019 and Values from the US Census Bureau. We calculated the sum of seven days for the first rate provided by the proportion of older persons who received the same rate in each state and throughout the US (excluding the proportion and dosage provided through all U.S. governments). We used this method to calculate the amount that countries and the US provide first aid to 100,000 people. Weekly changes in initial dose measurements are calculated using quantity from the current (April 29, 2021) to the standard from the previous 7 days. Finally, we divided the components into sections using 2010 US Census Bureau Region and Distribution groups.


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