Clinical trials

Bulgarian Epidemiologist: Effectiveness of All Vaccines Is Very High between 86 and 92%

The effectiveness of all vaccines remains very high - between 86 and 92% with different drugs, with all variants of the virus so far.

This was stated to BTV by the epidemiologist Dr. Petar Markov, a lecturer at the London School of Tropical Medicine.

Japan Suspends Use of 1.63 Million Jabs of Moderna Vaccine over Safety Concerns

Japan announced it had suspended the use of some 1.63 million Covid-19 Moderna jabs after the domestic distributor received reports of contaminants inside the doses. Both country's officials and representatives of the pharmaceutical company said that no safety or efficacy issues had been identified but still the suspension was just a precaution, Reuters elaborated.

Japan recalls 1.63 million Moderna vaccine doses

Ministry of Health of Japan announced that it has received reports from several centers for mass vaccination, which state that it has been discovered that "foreign substances" are found in certain unused doses of the Moderna vaccine.
A ministry spokesperson confirmed to EFE that the three vaccine lots that were withdrawn were manufactured in a plant in Spain.

Turkey begins Phase 3 trials of homegrown COVID vaccine

Turkey began administering its national coronavirus vaccine candidate to volunteers on Aug. 25 in the Central Anatolian province of Kayseri as part of Phase 3 studies.


The inactivated Turkovac vaccine candidate was jointly developed by the Health Ministry, Health Institutes of Turkey, and Erciyes University (ERU).

Bad News for Those Inoculated with Pfizer and Moderna Vaccines

The efficacy of anti-COVID-19 vaccines of Pfizer and Moderna companies has decreased from 91 to 66 percent since the Delta variant of the novel coronavirus that causes this infectious disease has become dominant in the United States. This brcame clear from data published by a Federal health agency, Frrance Press reported.

Universities urge students to get jabbed ahead of academic year

A number of universities in Turkey are calling on and encouraging students to have their two doses of vaccines against COVID-19 before the new academic year starts.


President Recep Tayyip Erdoğan previously said that unvaccinated university staff and students will be required to take PCR tests on a regular basis.

Pfizer Vaccine Becomes First to Receive Full FDA Approval

The US Food and Drug Administration (FDA) has given its full approval to the use of the Pfizer / BioNTech vaccine in the United States. Although the vaccine has been given so far, this has only happened with an "emergency" authorization.

The two-dose vaccine has met "the high standard of safety, efficiency and quality of production," said acting FDA director Janet Woodstock.