Background In reports of adverse reactions following vaccination with the coronavirus disease 2019(COVID-19) vaccines, there have been fewer reports of concern for menstrual disorders in female. Objective Our study employed Vaccine Adverse Event Reporting System (VAERS) to investigate and analyze the relationship between COVID-19 Vaccines and menstrual disorders in female. Methods We collected reports of menstrual disorders in VAERS from July 2, 1990 to November 12, 2021, and performed a stratified analysis. The potential relationship between COVID-19 vaccine and reports of menstrual disorders was evaluated using the Reporting Odds Ratio (ROR) method. Results A total of 14,431 reports of menstrual disorders were included in the study, and 13,118 were associated with COVID-19 vaccine. The ROR was 7.83 (95% confidence interval [95%CI]: 7.39–8.28). The most commonly reported event was Menstruation irregular (4998 reports), and a higher percentage of female aged 30–49 years reported menstrual disorders (42.55%) after exposure to COVID-19 Vaccines. Both for all reports of menstrual disorders (ROR = 5.82; 95%CI: 4.93–6.95) and excluding reports of unknown age (ROR = 13.02; 95%CI: 10.89–15.56),suggest that female age may be associated with menstrual disorders after vaccination with the COVID-19 Vaccines. Conclusion There is a potential safety signal when the COVID-19 vaccine is administered to young adult female (30–49 years old), resulting in menstrual disorders in. However, due to the well-known limitations of spontaneous reporting data, it is challenging to explicity classify menstrual disorders as an adverse event of the COVID-19 Vaccines, and reports of adverse reactions to COVID-19 Vaccines in this age group should continue to be tracked.

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The coronavirus pandemic showed the need for urgently improvement of different sectors in Uzbekistan, especially, the healthcare system and the biopharma industries. Uzbekistan government and private sectors have taken comprehensive measures to control the spread of infection in the country and tried to mitigate the impact of the pandemic. In this chapter, we discussed the primary measures taken to combat the coronavirus pandemic and the details of developing a local reverse transcription real-time PCR (RT-qPCR) detection kit as well as the experience of conducting the phase III clinical trials of the recombinant Uzbek-Chinese vaccine-ZF-UZ-Vac2001 against coronavirus infection. Finally, information is given on the mass vaccination campaign in the country, the difficulties encountered and the achievements made. The developed RT-qPCR detection kit was successfully implemented into production and have widely used for pathogen diagnosis. A total of 6965 volunteers over 18 years old participated in the clinical trials of ZF2001 and the vaccine had an efficacy level of 84.8%. More than 67.6 million doses were administered using seven types of anti-COVID vaccines in the country. The pandemics urged the country to establish a scientific and technical base that aimed at quickly responding to potential future challenges and emergencies.