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On 31 December 2019, the Health Commission of Wuhan, Hubei, China, informed the WHO about a cluster of acute pneumonia cases with unknown origin in its province. On 9 January 2020, the Chinese Center for Disease Control and Prevention (CCDC) reported the identification of a novel coronavirus (later identified as the SARS-CoV-2) as the cause. [5]
A contraceptive implant is an implantable medical device used for the purpose of birth control.The implant may depend on the timed release of hormones to hinder ovulation or sperm development, the ability of copper to act as a natural spermicide within the uterus, or it may work using a non-hormonal, physical blocking mechanism.
[4] [5] [12] [13] It is available as an implant placed under the skin of the upper arm under the brand names Nexplanon and Implanon. It is a progestin that is also used in combination with ethinylestradiol , an estrogen , as a vaginal ring under the brand names NuvaRing and Circlet . [ 14 ]
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Levonorgestrel-releasing implant, sold under the brand name Jadelle among others, are devices that release levonorgestrel for birth control. [1] It is one of the most effective forms of birth control with a one-year failure rate around 0.05%.
The COVID-19 pandemic in Puerto Rico was an ongoing viral pandemic of coronavirus disease 2019 , a novel infectious disease caused by severe acute respiratory syndrome coronavirus 2 . It is part of the ongoing COVID-19 pandemic. Puerto Rico started addressing the risks of an outbreak in early 2020.
As of 7 July 2021, CoronaVac is the most widely used COVID-19 vaccine in the world, with 943 million doses delivered globally. [40] In July, Sinovac signed advanced purchase agreements with GAVI to supply COVAX with 50 million doses in the third quarter of 2021 and up to a total of 380 million doses by the first half of 2022.
The Democratic Republic of Congo started its COVID-19 vaccination campaign on 19 April 2021 in response to the COVID-19 pandemic in the country. [1] COVID-19 vaccination in Democratic Republic of Congo was made possible using COVAX, an international scheme to make safe and effective COVID-19 vaccines worldwide. [2]