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Lead-based alloys are conventionally used for soldering interconnections that are expected to perform at high temperatures. Because of the concerns of lead toxicity, the development of lead-free solders became important. Till now, none of the proposed alloys have the characteristics that can completely substitute the Pb-bearing solders for high-temperature soldering application. Recently, researchers studied many ternary and quaternary systems near Zn–Al binary eutectic composition and reported prospects in soldering applications. However, the bulk solder properties of the Zn–Al binary system near the eutectic composition is rare in the literature. In the present study, the microstructure and thermal, mechanical and electrical characteristics of eutectic and near-eutectic Zn–Al alloys are investigated as replacement of traditional lead-bearing high-temperature solders. Mechanical and electrical properties of Zn was enhanced by alloying with Al, without altering much of the thermal expansion co-efficient. Finally, the material properties of the prepared Zn–Al alloys and other Zn-based alloys are compared with the conventional Pb–Sn solders. Research shows, 7 wt% Al–Zn alloy has multiple times higher magnitude of ultimate tensile strength, Vicker’s microhardness and electrical conductivity than the traditional Pb–Sn high-temperature solders. The melting temperature of the alloys was a bit higher than the Pb–Sn solders. A suitable ternary element addition to the system can potentially replace the conventional Pb-based high-temperature solders.

Vaccines are the best chance to control the pandemic—unless leaders succumb to vaccine nationalism. Vaccine nationalism is a frequent recurrence, especially during a brand-new market distribution. The development of safe and effective COVID-19 vaccines in such a short space of time is a testament to modern scientific abilities. It will also test the world's political will and moral commitment to end this pandemic. As desperate as the COVID-19 pandemic, vaccine nationalism is already setting a foundation for itself and is considered socially and economically counterproductive. Vaccine equity is not just a theoretical slogan, and it protects people worldwide from new vaccine-resistant variants. Understanding and anticipating the consequences is vital, and creating a global solution approach to avoid them. This article evaluates the common issues previously faced and the plausible ones during this pandemic. A few recommendations are made to warn and accentuate the reality of this dire matter.

Every year, about 4 million cases and 143,000 deaths due to cholera are recorded globally, of which 54% were from Africa, reported in 2016. The outbreak and spread of cholera have risen exponentially particularly in Africa. Coupled with the recent emergence of the Coronavirus Pandemic (COVID-19) in Africa, the local health systems are facing a double burden of these infectious diseases due to their cumulative impact. In this paper, we evaluate the dual impact of cholera and COVID-19 in Africa and suggest plausible interventions that can be put in place to cushion its impact.

In February 2021, a new Ebola virus disease outbreak was confirmed amid the COVID-19 pandemic in the Democratic Republic of Congo. Although the country has successfully contained the outbreak amid its fight against the COVID-19 pandemic, the epidemiological situation is still concerning, primarily due to the risk of an increase in the number of COVID-19 cases. The coexistence of both outbreaks increased the burden on the country’s health system mainly because Ebola response programs were redirected to the COVID-19 national response. Strategies adopted and lessons learned from previous Ebola outbreaks were crucial to developing the COVID-19 national response. To tackle the challenges of combating both the viruses, it is essential to adopt multidisciplinary measures such as prevention, education, and vaccination campaigns, promoting hygiene and social distancing practices, and improving diagnostic and management protocols. This paper discusses the efforts, challenges, and possible solutions to grapple with Ebola amid the COVID-19 crisis in DRC successfully.

The COVID-19 pandemic has wreaked havoc in the world from last year, and any further insults like Zika virus will surely bring the apocalypse unto us. In July 2021, Zika began spreading in India, mainly in the state of Kerala. Zika infection resembles closely COVID-19 and other arboviral infections, which might lead to delayed and misdiagnosis, further leading to underreporting of cases. Some of the feared complications of Zika include Guillain–Barré syndrome and congenital Zika syndrome leading to microcephaly. Thus, Zika virus disease (ZVD) has significant public health and social impacts. Since the trifecta of infectious diseases (host, agent and environment) are all conducive to the spread of Zika in India, there is a huge risk that ZVD might become endemic in India, which is especially dangerous in the backdrop of this pandemic. This has to be stopped at all costs: the main aspects of which are public health measures, vector control and early diagnosis, especially in case of pregnant women. The diversion of healthcare resources for this pandemic has albeit made this difficult, but we must do our bit if we have to overcome this situation.

India is home to the most significant number of tuberculosis (TB) cases around the globe. The COVID-19 crisis has deeply perturbed most of the essential TB services in India. Regulating TB is difficult in a densely populated country like India due to latent TB infection in millions of Indians, which can reactivate at any point in the future. Due to the ongoing pandemic, healthcare workers have been diverted to activities implemented for effective COVID-19 management, leaving a meager workforce to help deal with TB management. Integrating TB and COVID-19 to augment India’s health outreach is the need of the hour to diminish the effect of the COVID-19 crisis on TB. Increasing overall testing capacity, active screening, implementation of strategies for easy identification of TB hotspots, and ensuring uninterrupted drug supply for treatment through heedful planning of local and regional distribution and transportation will especially help cater to the vulnerable population who are at a high risk of suffering from adverse outcomes of TB. Lessons learnt in the battle against COVID-19 can most definitely help in providing insights to fulfill the goal of eliminating TB from India.

Infectious Disease Surveillance (IDS) in the community is essential to prevent, control, and detect outbreaks. A strong surveillance system is a need of time for low to middle-income countries like Pakistan where around half of the reported deaths are due to infections that can be easily prevented in the presence of a surveillance system. Although Pakistan has IDS which monitors and collects the data on several infectious diseases, the system is unreliable, inadequate, and substandard. As a result, dengue, tuberculosis, malaria, hepatitis B and C, and many other infectious diseases are still prevalent in Pakistan and unfortunately, the numbers are still rising. In this commentary, we have tried to highlight the problems the country is facing to establish a proper and self-sustainable surveillance system and have recommended some steps the relevant stakeholders should consider taking to make healthcare better in Pakistan.

Bangladesh, a low-middle-income country in South Asia is facing one of its worst public health emergencies due to the COVID-19 pandemic. The increase in the number of cases from the disease, since the second half of March 2021, can potentially cause the health system overload, and has, as one of the main reasons, the non-compliance with measures of social distance and the emergence of the variants of concern in the country. This increase in the contagion curve can also provide a favorable environment for the occurrence of more mutations in the structure and genome of the virus. Therefore, there is an urge to carry out genomic surveillance programs in order to identify, monitor and characterize these variants, and understand whether the vaccines currently used are effective against them.

Tuberculosis (TB) is a deadly infectious disease that kills approximately 1.5 million people per year and is among the most frequent respiratory infections in developing countries. Morocco has made significant progress in the control and management of TB during the past 30 years thanks to its National Plan for Tuberculosis and the continuous support of national and international partners. While tremendous efforts were undertaken to tilt the balance against the COVID-19 pandemic, new challenges resurfaced with regard to long-standing health problems amongst which is TB. The spill-over effect of the COVID-19 pandemic disrupted health service delivery globally, threatening to reverse years of progress made on the TB control front. In Morocco, this crisis highlighted deep shortcomings within the national health system and in the adopted approach to TB control. This article discusses national efforts to get back on track with regard to TB management, the multitude of challenges that co-emerged with the onset of COVID-19 and lays down key recommendations to implement in order to build back a TB control plan that is resilient in the face of health hazards.