What does a second wave of COVID-19 mean?

Second wave: A phenomenon of infections that can develop during a pandemic. The disease infects one group of people first. Infections appear to decrease. And then, infections increase in a different part of the population, resulting in a second wave of infections.

How long do symptoms for COVID-19 last?

The main symptoms of COVID-19—fever, cold symptoms, and/or cough—typically appear within 2-14 days of exposure. How long symptoms last varies per person, but most people recover by two weeks.

How are radio waves harmful to the human body?

The only proven biological injury from radar is the result of its very short wavelength radio waves, commonly called microwaves. Like microwave ovens, high exposures to radar emissions cause heating in exposed tissue. If the heating is sufficient, the tissue dies.

How are electromagnetic fields harmful to human health?

However, it is advisable to avoid heavy exposure, if possible. Electromagnetic fields (EMF) are generated in the vicinity of power lines, mobile phones, mobile phone towers, broadcast towers and similar transmitters. Whether or not EMF can harm human health is a controversial issue.

How are low frequency electric fields affect the human body?

Low-frequency electric fields influence the human body just as they influence any other material made up of charged particles. When electric fields act on conductive materials, they influence the distribution of electric charges at their surface. They cause current to flow through the body to the ground.

Is there a link between EMF and human health?

Whether or not EMF can harm human health is a controversial issue. Scientific evidence does not demonstrate a causal link between typical exposures to EMF and adverse health effects. The Victorian Department of Human Services recommends that heavy exposure to EMF be avoided, if possible.