The study was conducted in Hong Kong to evaluate the effectiveness of different doses of vaccines obtained by the population (more than 13 million doses) in the period from December 2021 to March of this year.
After the researchers analyzed patient data, they found that two doses of any vaccine against the disease provided protection against severe infection and death within 28 days of the date of the second dose of the vaccine, with greater efficacy among adults aged 60 years and over.
The researchers added that three doses of any vaccine provides higher levels of protection, and said that priority should be given to the elderly, especially those over the age of 60 and other at-risk groups.
Many countries of the world are facing major outbreaks of the Corona virus due to the spread of the highly contagious 5BA mutated 5BA, especially in Southeast Asia, where the infection in South Korea exceeded 40,000 infections in one day.
In Japan, a new wave of Corona infections is spreading at a rapid pace, as daily cases of HIV infections exceeded the 100,000 mark per day, and most of them are due to the spread of the 4BA and 5BA sub-mutants of Omicron.
Hong Kong has maintained a low prevalence of Covid 19 until cases due to omicron mutants have increased since January of this year, at a time when vaccination levels have decreased, especially among the elderly aged 70 years and over.
In Europe, the situation is also getting more severe, which prompted the competent authorities to recommend that the elderly and the most vulnerable groups receive a second dose to boost immunity against Covid 19, with the increase in HIV infections in the old continent.
The situation in our Arab countries is no less dangerous, as the prevalence rates are increasing in light of the sub-Omicron mutants. In Egypt, the authorities were forced to re-raise the epidemiological alert, and to convert three government hospitals into partial isolation hospitals.
This is in addition to restoring other procedures, such as imposing the wearing of masks in public facilities, including the subway, and the Egyptian Ministry of Health announced that the average corona death in Egypt is 6 cases per day.
The World Health Organization announced the outbreak of the “Marburg” virus in Ghana, in western Africa, causing the death of at least two people with the virus, which is from the Ebola virus family.
In Tanzania, Central East Africa, the authorities announced the emergence of a mysterious disease that infected 13 people, three of whom died.
She added that the symptoms of the disease are nosebleeds, fever, headache and fatigue, and the results of the patients’ test revealed that they were not infected with Ebola, Marburg or Covid-19 viruses.
For her part, Tanzanian President Samia Solho said that the strange disease may be caused by the increasing mixing between humans and animals due to the deteriorating environmental situation.