chief said insecurity had become a "major impediment" to controlling the outbreak. He reported that since January there had been 42 attacks on health facilities and 85 health workers had been wounded or killed. "Every time we have managed to regain control over the virus and contain its spread, we have suffered major, major security events. We are anticipating a scenario of continued intense transmission". Healthcare workers Health workers must wear personal protection equipment during treatment of those affected by the virus. On 3 September 2018, WHO stated that 16 health workers had contracted the virus. On 10 December, the WHO reported that the current DRC outbreak had led to 49 healthcare workers contracting the Ebola virus, and 15 had died. As of 30 April 2019, there have been 92 health care workers in the DRC infected with EVD, of which 33 had died. With false rumors being spread by word-of-mouth and social media, residents remain mistrustful and fearful of health care workers. In January 2020, it was reported that there had been nearly 400 attacks on medical workers since the outbreak began in 2018. Post-Ebola virus syndrome In terms of prognosis, aside from the possible effects of post-Ebola syndrome, there is also the reality of survivors returning to communities where they might be shunned due to the fear many have towards the Ebola virus, hence psychosocial assistance is needed. Many survivors of EVD face serious side effects, including but not limited to the following: History The Ebola virus disease outbreak in Zaire (Yambuku) started in late 1976, and was the second outbreak ever after the earlier one in Sudan the same year. On 1 August 2018, the tenth Ebola outbreak was declared in the DRC, only a few days after a prior outbreak in the same country had been declared over on 24 July. Learning from other responses, such as in the 2000 outbreak in Uganda, the WHO established its Global Outbreak Alert and Response Network, and other public health measures were instituted in areas at high risk. Field laboratories were established to confirm cases, instead of shipping samples to South Africa. Additionally, the outbreak was closely monitored by the CDC Special Pathogens Branch. Statistical measures One way to measure the outbreak is via the basic reproduction number, R0, a statistical measure of the average number of people expected to be infected by one person with a disease. If