According to researchers from the University of Texas cancer center M. D. Anderson, implementation of social distancing policy is consistent with a significant reduction in the transmission of SARS-cov-2 virus, and reduces the overall mobility as in the United States and around the world, providing evidence that social distancing is a useful tool in preventing the further spread COVID-19.
The study, published today in BIOCHEMISTRYbelieves that social distancing policy adopted at the national level in 46 countries prevented was estimated to be 1.57 million cases COVID-19 over a two week period, which represents a decrease by 65% in new cases. The researchers suggest that these findings highlight the significant benefits that can be achieved by people practicing social distancing.
“At them. M. D. Anderson, we are focused on caring for patients with cancer, and we know that our patients are highly vulnerable to COVID-19,” said senior author Raghu Kalluri, M. D., Professor and chair, Department of cancer biology.
“So we felt it was important to conduct an unbiased analysis of the security measures that could benefit our patients and society as a whole. From our data analysis, it became clear that practicing social distancing can have a huge impact on the speed of transmission.”
The impact of the policy of social distancing in the United States
To determine the effectiveness of policies for social distancing in the United States, the researchers analyzed COVID-19 spread in each of the 50 States. Recognizing that many factors contribute to the spread of the disease, they analyzed new cases before and after States imposed the rules of social distancing.
Three States not to implement such a policy, providing an opportunity for comparison. Data were analyzed over the same time periods compared to other States.
We found that the state experienced a significant decrease in the rate of transmission after the implementation of social distancing policies, compared to States without such policies. In fact, two of the smallest reduction in proliferation was seen in States with no policies social distancing”.
Daniel Mcgrail, PhD, the study’s lead author and researcher at the Department of systems biology at the University of Texas M. D. Anderson cancer center
47 States with the policy of social distancing also seen a greater decrease in the average mobility of the community against the state without a policy that identifies patterns in the movement of people from the residential, manufacturing, retailing and other areas. States with no policies social distancing also demonstrated a decrease in mobility, although these changes were significantly less than the state’s policy of distancing.
The impact of the policy of social distancing worldwide
Understanding that the US analysis was limited to a small number of States with no policies social distancing, scholars have analyzed the consequences of the policy of social distancing throughout the world. They were able to obtain sufficient data for 46 countries with national policies for social distancing, 74 countries without such a policy, and 14 regional policy.
After such analysis of the data suggests that a much larger reduction of transmission was seen in the countries after the implementation of the national policy of social distancing in comparison with those with regional policy or agreed upon terms, in the countries without a policy. No significant differences were observed between countries, regional policy and without a policy of social distancing.
Countries with policies social distancing significantly reduced the mobility of the community towards the peoples, not the politicians, and those with national policies saw more decreases than the country’s regional policy. There is a strong correlation between the decline in mobility and reduction of virus transmission, stressing the importance of people practicing social distancing to effectively prevent transmission of the virus.
“This is a clear indication that the measures of social distancing can collectively have a huge impact on reducing the spread of SARS-cov-2, and we encourage people to practice social distancing, to help control the spread of infections,” said Kalluri. “We believe that these data will provide useful information for public health officials and politicians when considering further measures to reduce the spread COVID-19 in their communities.”
The authors acknowledge the study is the reliance on direct COVID-19 testing, which may underestimate Prevalence. In addition, the researchers drew attention to the dispersion of prices following the implementation of the policy of social distancing as an internal control for the numerous additional factors that can contribute to the spread price.
For analysis, the daily numbers of cases and population data were collected from COVID-19 data warehouse Center for systems science and engineering at Johns Hopkins University. Information on policies social distancing, obtained from the aura to the vision of a global COVID-19 lock and tracker mobility data were obtained from reports mobility Google. All data for the study were collected on June 5, 2020.