Abstract
BACKGROUND:
The Novel Coronavirus Disease 2019 (COVID-19) has proved to be one of the most burdensome respiratory disease outbreaks ever. Moreover, the public health emergency of the COVID-19 outbreak has been seen by the World Health Organization (WHO) as global health concern since March 2020 and there has been a significantly increased morbidity and mortality in the community worldwide. The objective of this review is to describe and review the global public health significances and community and healthcare perception of features, treatments, prevention and control methods to slow the transmission of the outbreak.
METHODS:
For this review, the literature has been searched by following online databases, including medRxiv, pubmed, medline and Google scholar databases. The key search terms ‘COVID-19’, ‘2019 novel coronavirus’, ‘2019-nCoV’, ‘novel coronavirus’ and ‘Pneumonia’ were used to search the literature. Scientific papers published online by the Center for Disease Control (CDC) and the WHO from 01 January to 06 May 2020 in the English language were included for analysis.
RESULTS:
The results of this review indicated that COVID-19 is a serious global public health problem. It affects immune compromised individuals living with chronic diseases, the elderly and pregnant women more severely. The disease spread rapidly from one country to countries worldwide. In all, 212 countries highlighted the weakened state of essential public health and emergency services. The researchers addressed the lack of perception in communities, including health professionals, with regard to COVID-19. Healthcare settings were analyzed in terms of the pandemic nature of the virus, onset and the overall characteristics of disease outbreak. Microbiogists were also used to assess the daily cumulative index of COVID-19. With regard to treatment, chloroquine phosphate and herbal medicines were shown to be promising as supportive treatments to slow COVID-19 transmission, coupled with isolation and quarantine techniques.
CONCLUSION:
The review indicates that COVID-19 has a high global public health significance due to its high morbidity and mortality rates. Still, there was no specific or effective vaccine or treatment, moreover, the community, including health professionals, have a low perception as regards COVID-19, even though different prevention and control methods have been conducted. Thus, there is a need for awareness creation, alongside further research applied to finding effective vaccine and treatments.
Keywords
Introduction
The Novel Coronavirus Disease 2019 (COVID-19) is one of the most burdensome respiratory disease outbreaks ever. It can affect any age, sex, group or race, however, it affects immune- compromised individuals living with chronic diseases, the elderly and pregnant women more severely. The disease has spread rapidly from one country to countries across the world. Hence, a global public health emergency to fight the COVID-19 outbreak was announced by the WHO in March [1].
An emerging novel pathogen which has significantly threatened the life of the global community since 1 January 2020, the origin of the virus is still unknown, but there is speculation that it has an animal origin [1, 2]. As a result, it poses public health, economic, psychological resilience and social crises for all countries.
Fever, dry cough, shortness of breath (dyspnea) and tiredness are found to be the signs and symptoms of COVID-19. It’s incubation period falls within 2–14 days after exposure, however, asymptomatic patients showing no clinical signs were found in Wuhan, China [3]. There are concerns about the diagnosis of COVID-19, as there is no sensitive, specific and rapid diagnostic methods to detect this virus, although reverse-transcriptase Polymerase Chain Reaction (RT-PCR) and immunofluorescence antigen detection assays are currently being used to test nasopharyngeal samples [1, 2].
Several researchers from different countries are struggling to develop specific and effective vaccines and treatments for COVID-19. For example, in the USA a first phase clinical trial has been applied on 45 healthy adult volunteers, with two shots 28 days apart [6, 7]. The washing of hands with soap and water for 20 seconds; use of surface disinfectants with alcohol and sanitizer; social/physical distancing; isolation/staying home; quarantine; careful disposal of infected materials and nasal secretions are the most effective prevention and control methods to combat the disease [6]. This review was aimed at describing and reviewing the global public health significance, community and healthcare perception, treatments, prevention and control methods related to the COVID-19 Outbreak.
Methods
In this review, the literature has been searched by following online databases, including MedRxiv, Pubmed, MEDLINE and Google scholar databases. Key search terms used were: ‘COVID-19’, ‘2019 Novel coronavirus’, ‘2019-nCoV’, ‘Novel coronavirus’and ‘Pneumonia’ to search the literature. Scientific papers published online by the Center for Disease Control (CDC) and the World Health Organization in the English language from 1 January to 6 May 2020 were included in this analysis.
Public Health Significances of Coronavirus Disease 2019 (COVID-19)
Public Health Significances of Coronavirus Disease 2019 (COVID-19)
The articles were screened independently by two reviewers for eligibility. A third reviewer was consulted to resolve disagreements. The reviewers independently reviewed the titles, authors, year of publication and abstracts against eligibility criteria.
Results
The current systematic review assesses the public health significance from the key relevant literature, various perceptions of COVID-19, treatments and prevention and control methods implemented to slow its transmission. A psychiatric situation directly related to distress has accompanied the COVID-19 disease outbreak, and has particularly affected the elderly section of the population,
Perspectives on Coronavirus Disease 2019 (COVID-19)
Perspectives on Coronavirus Disease 2019 (COVID-19)
The findings also indicated that the virus spread rapidly from one country to many other countries around the world [10]; therefore, national readiness capacities are necessary to slow COVID-19 transmission using the vital tools of local risk assessment to understand how the government, managers, healthcare providers, prevention and control awareness committees, policy makers, community leaders, and all other stakeholders including and community at large can contribute to slowing the transmission of the virus in various countries worldwide. Hence, this support may help communities to implement life-saving actions [6, 9]. Evidence showed that most health professionals did not have adequate awareness concerning the pathological features of COVID-19 [9].
The prevalence of COVID-19 in Wuhan, Hubei city, China was very high, and the case fatality rate was also estimated to range from 2 to 3% [10, 11]. Even though the virus was observed as a minor problem from the perspectives of mortality or disease burden, the outbreak reminded the world of its shared vulnerability to a pandemic infection. For instance, the clinical characteristics of the 138 hospitalized patients with confirmed COVID-19 who were also infected with pneumonia [12]. It also highlighted the weakened state of essential public-health emergency services, not only in Wuhan, China, but also in a total of 212 countries worldwide.
The isolation of COVID-19 from a man with pneumonia in Saudi Arabia was observed in 2020 [13]. Similarly, there was an initial investigation of the transmission of COVID-19 among crew members on the cruise ship Yokohama in Japan in February 2020 [14]. together with the epidemiological and clinical nature of 99 cases of pneumonia due to COVID-19 recorded as epidemic disease in Wuhan city, China [15]. Specifically, the epidemiological and clinical analysis of about 10 neonates born to mothers with the disease indicated severe pneumonia [16]. The research findings suggested that pregnant women are more susceptible to COVID-19 and are more likely to have complications and even progress to severe illness due to the disease [17]. The early transmission dynamics of this disease appear to be similar to those of infective pneumonia [18]. Meanwhile, most of the countries followed the quarantine rules as one of the critically important prevention and control methods to deal with the COVID-19 disease outbreak.
Most of the studies reviewed showed that Coronavirus infection caused groups of severe respiratory illness similar to severe acute respiratory syndrome (SARS) corona virus, and was associated with Intensive Care Unit (ICU) admission and high morbidity and mortality rates [19]. Meanwhile, the route of transmission is person-to-person [20]. With regard to the basic method of identifying COVID-19, the WHO have used various types of clinical specimens to identify the cause of the disease [21].
The study results shown in Table 2 indicate different perceptions and sensations among the communities and healthcare providers as regards COVID-19. Some of the researchers addressed the variation of pathological characteristics of COVID-19, and they have reported on the effect of autopsies of the aforementioned previous SARS, MERS and COVID-19. The pathologic nature of those three consecutive Coronavirus outbreaks has been observed through various methods of investigation and isolation systems [22].
Treatment trial of Coronavirus Disease 2019 (COVID-19)
The six geographical WHO regions have employed various types of data analysis according to their regional contexts. This may be supported to identify the regional problems related to COVID-19 [6, 22]. Most of the research findings, for example, of Lima and his colleagues (2020) indicated that many high, low and middle-income countries have identified the etiology and psychological factors and more of the emotional impacts of COVID-19 using a situational framework [7, 22]. In order to confirm COVID-19 cases, most of the healthcare settings analyzed the epidemic nature of the virus, onset and overall characteristics of the disease outbreak, including serology and pathogenic-microbe test results to identify the type of virus that caused the COVID-19 outbreak [8]. In other words, some of the laboratory experts used the daily cumulative index of COVID-19 [23]. Moreover, special molecular tests were used to demonstrate the presence of the SARS-nCoV-2 virus which caused the COVID-19 outbreak in the respiratory secretions, accompanied by a computerized tomographic chest scan. As a result, they saw abnormal results in the patients with confirmed COVID-19, as well as in those with no symptoms or with mild indications as such fever, coughing, sneezing and a runny nose. Hence, most of the laboratory centers followed various types of investigation and evaluation methods to identify the causative agents for COVID-19 then, after their active diagnostic evaluations, employed common laboratory test result such as might indicate whether the level of white blood cells was normal, abnormal or low and other C-reactive protein (CRP) was elevated [10, 23].
Table 3 indicates that no specific vaccine or treatment for COVID-19 has been found for use during the outbreak, however, most countries have used various existing supportive treatments to slow the transmission of COVID-19 from person to person, such as isolation and quarantine techniques. For example, Kaletra and traditional Chinese medicine have played a key role as essential supportive therapies in the treatment of the viral pneumonia [10] and minimized viral load [24]. Meanwhile, blood transfusion using normal volumes of blood units was provided by the blood banks of non-affected areas of the community to keep inventory stable and allow for routine hospital operations [25]. In other words, the main roles of antiviral drugs are still being established in various nations [10].
The results also show that chloroquine phosphate is one of the most important drugs for supportive treatment, and is apparently highly efficacious in the treatment of COVID-19 cases associated with mild and severe pneumonia [26, 27]. However, some scientists have been working to discover drugs to manage Coronavirus infection [28]. Even though there is no specific treatment for COVID-19, antiviral treatments have been tried in almost all countries as a way to decrease morbidity and mortality rates [29].
Currently, the main scientific surveillance and administration bodies for supportive drugs for COVID-19 patients are investigating the use of hydroxychloroquine [30, 31]. Drugs like chloroquine and hydroxychloroquine have been the ones most used for the prevention and control of COVID-19 transmission and have apparently effectively treated the novel COVID-19 outbreak in the Africa region [32].
Prevention and control methods for COVID-19
The results in Table 4 show that the slowing of COVID-19 transmission can be efficiently effected by the implementation of various methods of prevention and control. These include slowing transmission by means such as community and healthcare awareness, restriction of movement from place to place, allowing only local travel or restricting all travel [23], monitoring the spread of COVID-19, increasing distribution of safety materials (face masks, gloves) for all communities and particularly for physicians. Meanwhile, one of the most important and easiest way of decreasing Coronavirus cross contamination is the frequent washing of hands using soap and water and the use of sanitizers [1]. Furthermore, both quarantine and severe contagion diseases control techniques in any health settings that include contact and droplet protection, as well as the avoidance of a high degree of stress and emotional disturbance, as well as adequate sleep, a balanced diet and the avoidance of restricted food related to COVID-19 and related complications [1, 10].
The results of this study showed that older age groups are highly vulnerable to COVID-19, followed by children and other age groups. They indicated that the morbidity and mortality numbers vary depending on age and from country to country. The findings are supported by the 2020 report from the European Centre for Disease Prevention and Control, which found that the number of confirmed and hospitalized COVID-19 patients with severe clinical symptoms accounted for 15% of the total; however, the total number of deaths were 12%. The number of deaths in Germany, Italy and Spain increased rapidly, and there the case fatality among older people is also increasing [33]. As with this study, the older age groups were found to be dying at a rate greater than all other age group in every country; however, there was a very large variation in death and age from country to country [23, 38, 39]. This is an indication that it may offer a way to analyze the current disease outbreak and community health gaps between countries in the main working age groups. The probability of dying in adulthood is greater than in other age groups in almost all countries, but the variation in death rate related to age between countries is very large.
This review revealed a lack of global policy, strategic plans, and a general national readiness to slow COVID-19 transmission. Similarly, a study conducted in USA [36] described the way in which initial public health emergency response and clinical guidance was being applied in anticipation of further COVID-19 cases in that country, but that this could not efficiently and effectively prevent the ultimate occurrence of continued, widespread transmission of COVID-19. The WHO has advised the implementation of a five stage strategy to slow the spread of mild and severe symptoms of the disease [36] but fundamental questions have been raised by many communities regarding the necessity of taking the preventive and control measures advised to slow the outbreak is too high. The report [37] found that the challenges of COVID-19 and its impact on the community continues to grow. Moreover, many of the world’s nations are facing unprecedented problems with the number of cases [37]. Evidence showed that the public health emergency measures that are a routine preventive action against the spread of the Coronavirus (COVID-19) pandemic include: staying at home if you feel unwell, covering the mouth and nose with a flexed elbow or tissue when coughing or sneezing, disposing of used tissues immediately, washing hands often with soap and water and regularly cleaning frequently touched surfaces and objects [38].
The results of the study showed that there is still inadequate awareness among communities and healthcare providers as to how to combat COVID-19. Healthcare providers play a key role in providing relevant information about the distribution of confirmed COVID-19 cases, deaths and recovery and/or discharge of patients from temporary management centers, hospitals and waiting areas, and on how well transmission of COVID-19 is being slowed from person to person and from country to country. It also indicated the ways of avoiding risk among the communities. A study conducted in Kenya [39] suggested that the healthcare-provider workforce was intensified in sub-Saharan Africa, including Ethiopia, months ago. A report from the National Nurses Union in the USA indicated that only one-third of its members in various healthcare organizations had sufficient stocks of personal protective equipment (PPE) to respond adequately to the COVID-19 outbreak. Similarly, there are reports of a lack of awareness among many of the healthcare providers in some hospitals in France and Italy. Evidence also suggests that many healthcare providers have run out of masks, forcing doctors to examine and treat confirmed COVID-19 patients without adequate protection [39].
This study found that the prevalence of COVID-19 is very high, and that there has been a slight increase in fatality in the cases in China, as well as in all other countries. Moreover, despite the status level of the outbreak of COVID-19 being changed from epidemic to pandemic, there was weak application of prevention and control methods and many governments were slow in recognizing the pandemic as a public health emergency and acting to slow the spread of COVID-19. The isolation of COVID-19 patients from groups with pneumonia would have helped to identify the confirmed COVID-19 case, and how the community applied the efficient and effective quarantine to slow COVID-19 transmission from person to person. Most of the time, pregnant women are highly vulnerable to COVID-19 and are more likely to have mild to severe complications or even progress to severe illness in a disease outbreak such as COVID-19; SARS-CoV-2.
This study findings showed that there was a wide variation of pathological characteristics among SARS, MERS and COVID-19 diseases outbreak. COVID-19 in particular has killed many people with mild and severe symptoms if they were not able to access healthcare providers at the onset of their cases. Moreover, there was some variation in community and healthcare providers’ perception of how best to slow COVID-19 transmission.
This study result showed that most developed and developing countries have identified the impact of COVID-19. For example, the emotional impact has critically aggravated the severity of COVID-19 across all countries. As a result, there have been increasing etiology and psychological factors related to COVID-19 diseases outbreak in communities. Even though the healthcare settings were strongly assessed, the epidemic characteristics of COVID-19, including serology and pathogenic microbes test, there were abnormal results of patients confirmed as COVID-19 cases, as well as those with no symptoms or mild effects such as fever, coughing, sneezing and runny nose.
The results of this study revealed that there is a lack of direct therapeutic management available against SARS-CoV-2. Nonetheless, most countries started using some of the supportive drugs used in the treatment of HIV/AIDS, such as anti retro-virals (ART), and antimalarial drugs like chloroquine, as well as blood transfusion, in an attempt to manage the COVID-19 outbreak associated with pneumonia. Some countries, including China, used essential supportive therapies as such Kaletra and traditional Chinese medicines normally used to treat many viral complications such as pneumonia. In a similar study conducted in Italy [40], it was found that most of the drugs used against COVID-19 have not been endorsed for the purpose by scientists, or were in immature stages of development; nevertheless, a combination of anti-viral drugs and supportive care has been used to slow the progress of disease in COVID-19 [40].
Conclusions
The risk of a COVID-19 outbreak was very high in countries worldwide. Morbidity and mortality rates have increased in more than 200 countries. It is clear that COVID-19 outbreak limits, public health emergency targets and health policy instruments for the prevention and control of this disease have often been used to slow its transmission. In particular, governments should be implementing serious health policies to prevent and control the spread of COVID-19, and a high degree of attention to prevention and control actions should be paid around the world. It is important to ensure that the intended protection and prevention of the disease outbreak are achieved, and that any further protection and control methods are taken without delay. As a result, the research team recommends the implementation of continuous surveillance, investigation, human exposure assessment, WHO standard guidelines and rules and regulation upon the prevention and control methods of COVID-19. The results of the study identified the seriousness of COVID-19 for pregnant mothers and infants, and how the disease is transmitted from person to person. Therefore, the expansion of the public health emergency for the prevention and control of COVID-19, and the system for dealing with emergency disease outbreaks and the provision of new emergency medical services and public health emergency preparedness have naturally led to the current problems as regards the quality of healthcare delivery systems provided, and the ability of the public-health emergency systems to handle the WHO standard COVID-19 prevention and control methods in each country. Awareness creation in the community and further applied research on effective vaccines and treatment should be done. Moreover, epidemiological surveys should be implemented to manage the ongoing risk of outbreaks of COVID-19 and other endemic, epidemic, pandemic and sporadic disease outbreaks in various countries and continents.
Footnotes
Acknowledgments
The authors would like to thank Salale University, and all those individuals who helped with the review are also warmly acknowledged.
Authors’ contributions
AAG designed the review protocol. Both AAG and TB designed the search strategy for this systematic review protocol and performed the search in collaboration with online healthcare librarians. AAG, TB, EW, AFA,SM, HZA, AK, BAT, BAA, BSD, NSZ, AGG, BM, and QKY have participated in data selection, data extraction, data analysis, and interpretation of the results. All authors critically revised, read, and approved the final manuscript.
