[blueash]

There are so many new studies on COVID. I suspect that by the time we are done, every variable will have been examined. I had not thought I'd read one on the dangers of motorcycle riders.

Details, this is not peer reviewed nor yet published. It specifically discusses the use of motorcycles in Africa where the riders are expected to be more than one per cycle, and no marks or helmets. But it is interesting in a nerdy sort of way. I don't think American English is the author's or perhaps translator's primary language.

In Kenya, they [motorcycles] are called ”Boda Boda”, while in Nigeria they are commonly known as ”Okada.” Most people in the cities, towns and even in rural areas prefer motorcycle because they are faster, relatively cheap and can be used to avoid traffic jam in roads. Despite their usefulness, motorcycles contributes immensely to the spread of COVID-19 because the operators do not follow the traffic rules. For instance, they don’t put masks and helmets, they carry excess passengers, they don’t wash their hands as required. Hence, social distancing is not taken care of. Due to these factors, we study the transmissibility of COVID-19 as a result of the risk factors from the motorcycle operators.

In the particular case A = −1, and tk = 2k,sk = 2k+1,ak(t) = t for k = 0,1,2,... we have the solutions for the different initial values x0 = 1,0.5 and 0.2. Case 3. Let A = 0 and ϕk(t,x,y) = ak(t)y,ak : [tk,sk] →R,k = 1,2,...,p The solution of NIDE in Equation 3.7 is given by x(t;0,x0) =   x0 for t ∈ [0,s0] x0∏k i=0 ai (ti) for t ∈ [tk,sk],k = 1,2,... x0ak(t)∏k−0 i=0 ai (ti) for t ∈ (sk,tk+1],k = 0,1,2,...

That is a typical paragraph and is beyond the math I recall. But the conclusion of pages of math and charts is :

motorcycle operators are not indispensable when it comes to observing recommendations of World Health Organization and therefore if they adhere strictly to these recommendations, there will be a tremendous decrease in new infections and consequently reduces deaths due to COVID-19.

I don't see how this data applies here, I just found it interesting how the different aspects of culture and society require different considerations, so local bikers, don't take this personally.